Astronomy

“Isolated Araneiform Topography”

This image of the south pole was taken by HiRISE on (87.123°S, 126.291°E) on March 24th, 2007. Araneiform comes “aranea” (Latin) meaning spider; the HiRISE team saw these channels, carved into the surface by CO2 gas erupting from the ground, and thought they looked spider-like. They form after CO2 sublimates as the seasons change causing a build up a gas below the surface. Eventually the surface ruptures, creating these features. To me they look more like neurons but I can see their resemblence to spiders.

The width of this image is about 1 km.

Credit: NASA/JPL/University of Arizona

Geohack link: geohack.toolforge.org/geohack.php?pagename=Feature&params=87.123_S_126.291_E_globe:mars_type:landmark

Posted by u/htmanelski, m o d – linkage

Spiders!

 

Sun in ultraviolet, and yes that’s Venus passing in front of our sun! Credit – Nasa Solar Dynamics Observatory

Posted by u/Anuomnilinkage

Sweet.

 

Posted by u/paulhammond5155, Top contributor – linkage

Photograph of a Helicopter and a Rover from a Spacecraft orbiting Mars at an altitude of 279 km (173.4 miles) on September 24 2021, Local Mars time 15:30.

After a dramatic landing in February, the Perseverance rover and its Helicopter sidekick was re-imaged by HiRISE about 700 meters (2300 feet) from its original landing site. The rover doesn’t drive in a straight line though, and has covered much more ground than that (faint wheel tracks on the nearby ground are visible). HiRISE images like this one allow the rover team to choose the best route to get to their primary target and help put the rover’s observations in context within Jezero Crater.

  • The distance between the rover and the helicopter when this image was taken on September 24th was 175 meters (574 feet)
  • MRO Spacecraft altitude 279.0 km (173.4 miles)
  • Original image scale range from 28.8 cm/pixel (with 1 x 1 binning) to 57.6 cm/pixel (with 2 x 2 binning)
  • Map projected scale 25 cm/pixel and North is up
  • Raw images: www.uahirise.org/ESP_071077_1985
  • Viewed and cropped with HiView software from the 390 Mb HiRISE image
  • The HiRISE camera is onboard the Mars Reconnaissance Orbiter (MRO) that’s been orbiting and imaging Mars for 15 years.
  • The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona.
  • Image Credit : NASA/JPL/University of Arizona

This stuff is exciting. I hope it thrills you, too.

 

This Telescope Just Observed Something Huge Approach Our Moon That Can’t Be Explained

Unexplained Mysteries
Sep 24, 2021

This telescope just observed something huge approach our Moon that can’t be explained. Today, we take a look at what this telescope observed close to our Moon.

The Moon is one of the most studied celestial objects outside of Earth. In 1969, American astronaut Neil Armstrong became the first person to walk on the Moon, marking a turning point in humanity, in which space agencies promised to return.

As mentioned by spacex, only 24 humans have been to the Moon in history, noting that no one has been back since 1972. Spacex have announced that they plan to send their Starship spacecraft and Super Heavy rocket to the Moon, noting that Starship will have the ability to carry in excess of 100 metric tonnes to Earth orbit.

Thank you for watching! Thank you to CO.AG for the background music!

This one, I like, as it actually appears to be real, as opposed to the other vids I have seen in this genre, which do not appear so. So… what is it?

 

From Apollo 8… A black sky with a grey, cratered lunar horizon. A small blue Earth with scattered white clouds is just above the horizon,with about two-thirds of the Earth lit by the Sun and the remainder in darkness.

Posted by u/Bernard_Hunor_Deaklinkage

 

NASA’s Mars Perseverance Rover Captured Possible Aliens’ Spacecraft Flying In The Martian Sky

Physics Insight
Sep 11, 2021

NASA’s Mars Perseverance rover acquired these images using its onboard Left and Right Navigation Camera (Navcam). The camera is located high on the rover’s mast and aids in driving. These images were acquired on Sep. 11, 2021 (Sol 199) and Sep. 8, 2021 (Sol 196).

NASA’s Perseverance rover has now socked away two Red Planet samples. Perseverance collected a drilled-out core of a Martian rock dubbed “Rochette” and sealed the sample in its designated titanium tube on Wednesday (Sept. 8). The success came just four days after the car-sized rover collected its first-ever Martian sample, which was also cored from Rochette.

Imagery Credit: NASA/JPL-Caltech NASA/JPL-Caltech/University of Arizona/USGS

Sources: mars.nasa.gov/mars2020/multim… www.space.com/mars-rover-pers… mars.nasa.gov/resources/26224… mars.nasa.gov/resources/26220… mars.nasa.gov/resources/26219… mars.nasa.gov/resources/26227…
For more information email us via physicsinsight81@gmail.com

Well done and not all hypey.

Looks quite boxy and well-defined. The others I’ve seen have all looked more like amorphous rocks.

Exciting times are afoot, methinks.

 

Comet or something hit Jupiter

putnam6
Same as it ever was
Member Registered: 3/4/2005 Location: Same as it ever was Mood: Same as it ever

posted on Sep, 16 2021 @ 12:07 AM
direct link to this post

Just stumbled across this, trying to find a video of this and verify

SOMETHING JUST HIT JUPITER: Last night, German astronomer Harald Paleske was watching the shadow of Io create a solar eclipse in the atmosphere of Jupiter when something unexpected happened. “A bright flash of light surprised me,” he says. “It could only be an impact.” Follow the arrows to the fireball:

spaceweather.com…

 

Fascinating stuff.

Lucky that it was seen!

 

Perseverance Rover Spotted Strange Moving Object On Mars || Mysterious Object Is Moving On Mars

Physics Insight
Jul 5, 2021

Since NASA launched Perseverance Rover to Mars, on July 30, 2020, NASA is continuously monitoring it and taking its live updates. Its main goal is to Seek signs of ancient life and collect samples of rock and regolith (broken rock and soil) for possible return to Earth. The rover landed on Jezero Crater, Mars on Feb. 18, 2021. Perseverance is currently at the eastern edge of a scientifically interesting region called “Séítah,” which is characterized by sandy ripples that could be very challenging terrain for wheeled vehicles like the rover.

NASA’s Mars Perseverance rover acquired these images using its Left Mastcam-Z camera. Mastcam-Z is a pair of cameras located high on the rover’s mast. These images were acquired on Jul. 4, 2021 (Sol 132).

Images Credit: NASA/JPL-Caltech/ASU

Sources: mars.nasa.gov/technology/heli… futurism.com/the-byte/nasa-ma… mars.nasa.gov/mars2020/multim…

I love moving objects on Mars.

Especially when they’re in the air. I believe I saw these before, but I’m not sure, as there were several reports like this back in this timeframe.

It is quite exciting for this old soul to see them. I have no idea what they might be.
Perhaps something living, but that planform is quite bizarre. All the other ones had a remarkably similar appearance.

Talk about High Strangeness… flying rocks?

 

Perseverance rover spots Martian moon Deimos

VideoFromSpace
Aug 20, 2021

Deimos was recently captured by NASA’s Perseverance rover in the Martian sky. The moon orbits the planet about every 30 hours.

Full Story: www.space.com/perseverance-ro…

Credit: Space.com | imagery & audio courtesy: NASA/JPL-Caltech | produced & edited by [Steve Spaleta](www.twitter.com/stevespaleta)

Nice =]

 

Hubble Captures a Stunning ‘Einstein Ring’ Magnifying The Depths of The Universe

gortex
Knight of Ni
Member
Registered: 8/16/2009
Location: Valles Marineris
Mood: Transmogrified
Member is on ATS now.

posted on Aug, 21 2021 @ 02:10 PM
direct link to this post

Hubble is back and once again delivering the goods , this time the telescope has captured a stunning image of an ‘Einstein Ring’ , basically a cosmic looking glass created in this instance by the gravity of 2 Galaxies at the centre of the ring.

In the center in the image is a shiny, near-perfect ring with what appear to be four bright spots threaded along it, looping around two more points with a golden glow.
This is called an Einstein ring, and those bright dots are not six galaxies, but three: the two in the middle of the ring, and one quasar behind it, its light distorted and magnified as it passes through the gravitational field of the two foreground galaxies.

Because the mass of the two foreground galaxies is so high, this causes a gravitational curvature of space-time around the pair. Any light that then travels through this space-time follows this curvature and enters our telescopes smeared and distorted – but also magnified.
www.sciencealert.com…

Just fabulous! Bravo Hubble Team!

 

MYSTERIES OF THE ANCIENT MAP OF PLANET MARS

Paranormal Research Paul Stonehill
Mar 2, 2017

This is a journey from ancient Egypt to Armenia and beyond, through lost kingdoms and secret files, to find out who created an ancient map of the Red Planet discovered by a KGB undercover agent…

If you would like to support my channel, please donate here: www.patreon.com/user?u=6849546
Source videos – View attributions

This is fascinating. This thing needs to retrieved. Seriously. Especially since it is known where it might still be.

 

STRANGE ROBOTS OF ANCIENT CHINA

Paranormal Research Paul Stonehill – Jan 2, 2021

…All this is very similar to robots equipped with various manipulators, antennas, and means for observation… It has long been forgotten which field the metal skull had been found in…: “in one day it covered myriads of miles, and the person who sat on it reached the age of two thousand years.”

Well, gosh. Fantastic to imagine how it might be.

 

Newly Discovered World Is The Closest Directly Imaged Exoplanet Ever , COCONUTS !

gortex
Knight of Ni
Member
Registered: 8/16/2009
Location: Valles Marineris
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Member is offline.

posted on Aug, 3 2021 @ 02:04 PM
direct link to this post

COCONUTS 2b that is , just 35 light years away a Star called COCONUTS 2 hosts a gas giant Planet called COCONUTS 2b , luckily for us the Planet orbits it’s parent Star at an impressive 6,471 times the distance between Earth and the Sun away from it’s parent allowing us to get a picture and making it the closest Exoplanet we’ve imaged so far, the great distance also means a year on / in COCONUTS 2b takes 1.1 million years !

COCONUTS 2b is the red dot top left.

Not only is COCONUTS-2b (named for the COol Companions ON Ultrawide orbiTS survey) the closest directly imaged exoplanet to Earth to date – at a distance of just 35 light-years – it’s a rarity among exoplanet discoveries: a relatively cool, massive gas giant, orbiting its star at a great distance.

“With a massive planet on a super-wide-separation orbit, and with a very cool central star, COCONUTS-2 represents a very different planetary system than our own Solar System,” said astronomer Zhoujian Zhang of the University of Hawaiʻi Institute for Astronomy.

What made it visible is that, although it’s cool for a gas giant exoplanet, it’s still pretty warm, with a temperature of around 434 Kelvin (161 degrees Celsius, or 322 degrees Fahrenheit), in spite of its distance from the warmth of the star.

COCONUTS-2b is still quite young, up to only around 800 million years; its warm temperature is residual heat from the exoplanet’s formation, trapped inside the massive exoplanet, six times the mass of Jupiter. This heat means that the exoplanet faintly glows in infrared wavelengths – enough to be discernible in direct images.

Its huge orbital distance will have other benefits for future research, too. It may be able to help us better understand how gas giants form, a process that we still don’t understand very well – and taking a closer look at it will help us better understand gas giant diversity.
www.sciencealert.com…

Exciting stuff… We’re getting there!

Mars Real Night Sky 360º Perseverance Rover‘s FULL HD 4K

Dream Fight Night
Feb 24, 2021

This video is edited the original images do not include the sky Disclaimer This video was not made for the purpose of making money or something like that but for meditation and entretainement 🌌🧘🏼‍♀️🌎🌍 Credits : NASA

Spectacular! Wow.

 

Stanford astrophysicists report first detection of light from behind a black hole

dug88,
member, Registered: 12/15/2010
Location:
Mood:
Member is offline.

posted on Jul, 28 2021 @ 09:29 PM
direct link to this post

So, something actually pretty awesome. In a paper published today in Nature astrophysicists have reported the first ever detection of light emitted from behind a black hole. Ya know, those things that have such a strong gravitational pull, light itself can’t escape.

An analysis of X-ray flares from the innermost of region of a black hole’s accretion disk revealed short flashes of photons with patterns consistent with emmision from behind the black hole.

Pretty much, x-rays and photons are bouncing around the accretion disk of the black hole in such a way that the photons could only have emerged from behind the black hole itself.

Such a thing was predicted by Einstein some time ago now, some long time and finally, for the first time, it has now been observed.
This means soon we may actually get a glimpse at the far.side of a black hole.

news.stanford.edu…

Link to study published in nature.

Watching X-rays flung out into the universe by the supermassive black hole at the center of a galaxy 800 million light-years away, Stanford University astrophysicist Dan Wilkins noticed an intriguing pattern. He observed a series of bright flares of X-rays – exciting, but not unprecedented – and then, the telescopes recorded something unexpected: additional flashes of X-rays that were smaller, later and of different “colors” than the bright flares.

According to theory, these luminous echoes were consistent with X-rays reflected from behind the black hole – but even a basic understanding of black holes tells us that is a strange place for light to come from.

“Any light that goes into that black hole doesn’t come out, so we shouldn’t be able to see anything that’s behind the black hole,” said Wilkins, who is a research scientist at the Kavli Institute for Particle Astrophysics and Cosmology at Stanford and SLAC National Accelerator Laboratory. It is another strange characteristic of the black hole, however, that makes this observation possible. “The reason we can see that is because that black hole is warping space, bending light and twisting magnetic fields around itself,” Wilkins explained.

The strange discovery, detailed in a paper published July 28 in Nature, is the first direct observation of light from behind a black hole – a scenario that was predicted by Einstein’s theory of general relativity but never confirmed, until now.

The leading theory for what a corona is starts with gas sliding into the black hole where it superheats to millions of degrees. At that temperature, electrons separate from atoms, creating a magnetized plasma. Caught up in the powerful spin of the black hole, the magnetic field arcs so high above the black hole, and twirls about itself so much, that it eventually breaks altogether – a situation so reminiscent of what happens around our own Sun that it borrowed the name “corona.”

“This magnetic field getting tied up and then snapping close to the black hole heats everything around it and produces these high energy electrons that then go on to produce the X-rays,” said Wilkins.

As Wilkins took a closer look to investigate the origin of the flares, he saw a series of smaller flashes. These, the researchers determined, are the same X-ray flares but reflected from the back of the disk – a first glimpse at the far side of a black hole.

Link to study published in nature.

Abstract from the study:

The innermost regions of accretion disks around black holes are strongly irradiated by X-rays that are emitted from a highly variable, compact corona, in the immediate vicinity of the black hole1,2,3. The X-rays that are seen reflected from the disk4, and the time delays, as variations in the X-ray emission echo or ‘reverberate’ off the disk5,6, provide a view of the environment just outside the event horizon. I Zwicky 1 (I Zw 1) is a nearby narrow-line Seyfert 1 galaxy7,8. Previous studies of the reverberation of X-rays from its accretion disk revealed that the corona is composed of two components: an extended, slowly varying component extending over the surface of the inner accretion disk, and a collimated core, with luminosity fluctuations propagating upwards from its base, which dominates the more rapid variability9,10. Here we report observations of X-ray flares emitted from around the supermassive black hole in I Zw 1. X-ray reflection from the accretion disk is detected through a relativistically broadened iron K line and Compton hump in the X-ray emission spectrum. Analysis of the X-ray flares reveals short flashes of photons consistent with the re-emergence of emission from behind the black hole. The energy shifts of these photons identify their origins from different parts of the disk11,12. These are photons that reverberate off the far side of the disk, and are bent around the black hole and magnified by the strong gravitational field. Observing photons bent around the black hole confirms a key prediction of general relativity.

edit on 28/7/2021 by dug88 because: (no reason given)
edit on 28/7/2021 by dug88 because: (no reason given)

I love this stuff… so good for the head, it is!

 

Crossposted by u/SpaceInstructorlinkage

Cavern below?

HiRISE 🛰

r/SpaceBrainslinkage

Mars has hidden depths hinted at by intriguing pits scattered around the planet. Some of these tantalizing windows may be entrances to underground caverns. If humans ever make it to Mars, they may want to consider hunkering down underground to protect themselves from space radiation.

This image from NASA’s Mars Reconnaissance Orbiter (MRO) in 2011 shows a hole on the slopes of the Pavonis Mons volcano. “Why there is a circular crater surrounding this hole remains a topic of speculation, as is the full extent of the underlying cavern,” NASA said in an image feature in 2020.

Source Article. I’ve teamed up with a few aerospace engineers friends on r/SpaceBrains to design a crowdsourced Mars colony. Check out our progress on discord and share your skills.

This photo is stunning and fires up the imagination to excellent levels. A favorite since it was new.

 

Posted by u/htmanelski, m o d
linkage

“Mysterious Light-Toned Deposit in Vinogradov Crater”

This image of Vinogradov (20.981°S, 323.137°E), a heavily eroded 220 km diameter crater in Margaritifer Terra, was taken by HiRISE on July 1st, 2014. You can see many strange light-toned blobs, some of which appear circular and probably outline small craters. Scientists think this could have formed from the ejecta of a nearby crater, but the details of its origins are still unknown.

The width of this image is about 1 km.

Credit: NASA/JPL/University of Arizona

Geohack link: geohack.toolforge.org/geohack.php?pagename=Feature&params=20.981_S_323.137_E_globe:mars_type:landmark

 

Juno Flies Past the Moon Ganymede and Jupiter, With Music by Vangelis

NASA
Jul 14, 2021

On June 7, 2021, NASA’s Juno spacecraft flew closer to Jupiter’s ice-encrusted moon Ganymede than any spacecraft in more than two decades. Less than a day later, Juno made its 34th flyby of Jupiter. This animation provides a “starship captain” point of view of each flyby. For both worlds, JunoCam images were orthographically projected onto a digital sphere and used to create the flyby animation. Synthetic frames were added to provide views of approach and departure for both Ganymede and Jupiter.

Visit www.nasa.gov/juno & missionjuno.swri.edu to learn more.
Animation: Koji Kuramura, Gerald Eichstädt, Mike Stetson
Music: Vangelis
Producer: Scott J. Bolton
Credit: NASA/JPL-Caltech/SwRI/MSSS

Looks a lot more liquid than what we see in more rocky worlds.

 

Posted by u/azzkicker7283
linkage

Asteroid Juno Passing in front of M10

Needed something to shoot while waiting for the summer targets to rise, and I saw in stellarium that the ~250km asteroid Juno was going to pass in front of the M10 globular cluster. Each night had different seeing, clouds, and moon conditions, which is why the frames vary a bit in brightness and sharpness (also had a couple satellites fly through causing the streaks). Also photographed M10 in color back in 2019. Captured on June 16, 17, and 18th, 2021 from a Bortle 6 zone.

Places where I host my other images:

Instagram | Flickr


Equipment:

  • TPO 6″ F/4 Imaging Newtonian

  • Orion Sirius EQ-G

  • ZWO ASI1600MM-Pro

  • Skywatcher Quattro Coma Corrector

  • ZWO EFW 8×1.25″/31mm

  • Astronomik LRGB+CLS Filters- 31mm

  • Astrodon 31mm Ha 5nm, Oiii 3nm, Sii 5nm

  • Agena 50mm Deluxe Straight-Through Guide Scope

  • ZWO ASI-120MC for guiding

  • Moonlite Autofocuser

Acquisition: 2 hours 12 minutes (Camera at Unity Gain, -15°C)

  • Lum – 22×120″ per night

Calibration frames:

  • Darks- 30

  • Flats- 30 per filter

Capture Software:

  • Captured using N.I.N.A. and PHD2 for guiding and dithering.

PixInsight Processing: (processes batch applied via image containers)

  • BatchPreProcessing

  • StarAlignment

  • DynamicCrop

  • AutomaticBackgroundExtraction

  • Blink to stretch nonlinear

  • Annotation to add date and watermark

  • BatchFormatConversion .xisf to .png

  • PIPP to make final gif

 

Posted by u/htmanelski, m o d
linkage

“South Polar Cap, Summer 2000”

This image of the Martian south pole (83.9°S 160.0°E) was taken by the Mars Global Surveyor (MGS) spacecraft on April 17th, 2000. It was southern summer and the south pole was now at its smallest extent. In southern winter the south pole would easily fill the entire width of this image, but in summer it shrinks to only about 420 km across.

Credit: NASA/JPL/MSSS

Geohack link: geohack.toolforge.org/geohack.php?pagename=Planum_Australe&params=83.9_S_160_E_globe:Mars

 

IC 2944 Nebula

Posted by u/mrdeepsky01
linkage

We captured IC 2944 Nebula for 50hrs and it delivered interesting results! (OC)

My websitewww.utkarshmishraastrophotography.com/post/messier-104-sombrero-galaxy-ultradeep-imaging
My instagramwww.instagram.com/mr_deepsky/
IC 2944, also known as the Running Chicken Nebula or the λ Centauri Nebula, is an open cluster with an associated emission nebula found in the constellation Centaurus, near the star λ Centauri. It features Bok globules, which are frequently a site of active star formation. However, no evidence for star formation has been found in any of the globules in IC 2944
Image Credit Copyright : Utkarsh Mishra and Franck Jobard
12.5″ f/9 Quasar Ritchey Chretien
SBIG STL11000
Losmandy Titan
Frames:
Ha: 80×600″
Lum: 43×600″
OIII: 73×600″
RGB: 99×600″
Total exposure: 49h 10’Pixinsight and Photoshop

Oh, wow!

And oh, wow, a 12.5″ Quasar! My dream scope!

 

Photo by mustalainen
linkage

Solarmax 90mm, ZWO174, 1000 frames top 50%, Autostakker, IMPPG, photoshop, colors inverted

 

 

HiPOD 24 Jun 2021: Ejecta to the Southwest of Hargraves Crater

In this richly textured image, our goal is to look for stratigraphic relationships, melt-rich ejecta, and fragmental ejecta breccia (rock composed of sharp fragments). In Context Camera images and night/day infrared, the contrast suggests the presence of impact melt-rich deposits and bedrock.

Black and white is less than 5 km across; enhanced color is less than 1 km.

ID: ESP_063875_2000 date: 12 March 2020 altitude: 279 km

NASA/JPL/UArizona

Source: uahirise.org

 

u/mustalainen

Solar eclipse

taken with a solarmax 90mm and ZWO174 astro camera. about 1000 frames, top 30% frames stacked

azzkicker7283
Best Lunar 2017 | Lefty Curve Creator

Was any post-processing done to this?

mustalainen

Yes, quite a bit, firstly the actual picture only captures about 0.012% of the visual light (Ha wavelength) so there is no color. Secondly it is a mosaic of the sharpest part of the 300 sharpest frames. then you sharpen that further and bring out contrasts using a special program. When that is done you bring out the colors using photoshop.

 

Posted by u/htmanelski

A Dust Devil on Mars

This image of a dust devil in Amazonis Planitia (35.824° N 207.485° E, a few hundred km east of SpaceX’s proposed Mars landing sites) was taken on February 16th, 2012 by HiRISE. Amazonis Planitia is a large flat region in the northern lowlands which give rise for relatively high wind speeds during some parts of the year. Dr. Paul Geissler wrote about this image: “The delicate arc in the plume was produced by a westerly breeze at about a 250-meter height that blew the top of the plume towards the east. The westerly winds and the draw of warmth to the south combine to guide dust devils along southeast trending paths, as indicated by the tracks of many previous dust-devils.”

Everyday I post an image like this in r/Areology, check out that subreddit if you like this kind of stuff!

The width of this image is about 1km and the diameter of the dust devil is about 30 meters.

Credit: NASA/JPL/University of Arizona

Geohack link: geohack.toolforge.org/geohack.php?pagename=Feature&params=35.824_N_207.485_E_globe:mars_type:landmark

 

Photo by u/Zerotwo_is_wife

Jupiter with Callisto and Ganymede WITH ITS SHADOW

As requested on my other post people wanted to see a unedited one so here it is!!

Any feedback is welcome I used my Orion sky quest 8in Dobsonian Telescopes with a 10mm and 2x Barlow

My camera is a Sony a5000

So first I took a 0:24 second video

Then I put it into the program called PIPP that turned it into a AVI file

Then I took the AVI file in AutoStakkert and had it stack it altogether

Then did some fine tuning in registacks

Thank you!!

Nicolarge

Nice capture.

If you have capture it at the time and date indicated on the image, then the moon on the lower left corner is not Callisto but Io.

x

x

perfect timing

Posted by u/MoniMokshith

Perfectly Timed Photo Frames a Solar Eclipse Around a Man Leading a Camel in the Desert by Joshua Cripps

Fantastic!

 

Full view of Jupiter in infrared light

Posted by u/j3ffr33d0m

Full view of Jupiter in infrared light

troyunrau

Jupiter’s heat is largely internally generated — not from the sun. So the bands you’re seeing is where heat is rising from the interior, while the cold bands have cooled due to losing heat to space (in the form of infrared).

There is some sunlight related heating, but Jupiter emits twice as much as it gets from the sun. There are some that propose that Jupiter has some limited amounts of fusion going on in the interior to sustain this, but it could also just be latent heat of formation or due to mineral phase changes (crystallization processes).

 

mars sky

Posted by u/ShawnGreyling

Image taken by SkyCam on sol 99. Guessing they are stars?

paulhammond5155, Top contributor

The SkyCam is a modified (flight-spare) HazCam from Curiosity Rover. Therefore, I think it would be surprising if any stars were visible in this frame. To resolve stars the exposure duration would need to be fairly long, if that was the case we would see all the bright spots tracking around the sky as Mars rotated (the camera is fixed to the deck and does not move).

I believe it might be able to resolve the Martian moons, possibly some of the brighter planets and maybe fortuitously capture an incoming meteorite. Most of what we are seeing is probably noise and cosmic ray hits.

I’d really like these to be stars and galaxies as one comment mentioned, but to me it seems unlikely. But hey what do I know?

I’d like to be wrong in this case 🙂

EDIT: I have added the internal ring (anulus) and other optical shields that would mask areas of all exposed SkyCam images. These areas are masked to prevent stray light from entering the camera. But we can see in the image shared that there are star-like features etc where there should be none. Look closely at the original image and we can make out the masked areas of the lens (they’re a little darker. Each SkyCam image also captures part of the mast, again that should mask light entering the camera from stars etc LINK

 

KAGUYA taking “Full Earth-rise” by HDTV (Apr. 5, 2008)

JAXA | 宇宙航空研究開発機構
Mar 23, 2009

KAGUYA (SELENE) taking “Full Earth-rise” by HDTV on Apr. 5, 2008. Aspect ratio 16:9 and HD quality in English narration. (C)JAXA/NHK

Sweet!

 

Uranus

Photojournal: PIA17306
Source: Lawrence Sromovsky, University of Wisconsin-Madison/W.W. Keck Observatory
Published: July 11, 2004
An infrared composite image of the two hemispheres of Uranus obtained with Keck Telescope adaptive optics. The component colors of blue, green, and red were obtained from images made at near infrared wavelengths of 1.26, 1.62, and 2.1 microns respectively. The images were obtained on July 11 and 12, 2004. The North pole is at 4 o’clock.

Uranus

The two sides of the planet Uranus, as viewed in this composite image, by the Keck Telescope at near infrared wavelengths. These new images of the seventh planet from the sun promise to help scientists unravel the mysteries of the weather on Uranus.
Used with permission by: UW-Madison University Communications 608/262-0067
Photo by: courtesy Lawrence Sromovsky/UW-Madison Space Science and Engineering Center.
Date: 10/04 File#: scan provided

Link to source: solarsystem.nasa.gov

Simply spectacular.

 

A North Polar Crater

r/Areology – Posted by u/htmanelski

“A North Polar Crater”

htmanelski, m o d

This image of a crater near the North pole (84.335° N, 120.393° E) was taken by HiRISE on August 20th, 2008. What you see here is mostly dry ice (solid CO2) which accumulates at the poles seasonally. This was taken in northern summer, when the seasonal CO2 ice cap is thinning, revealing beautiful red material on this small crater’s slopes.

The width of this image is about 1 km.

Credit: NASA/JPL/University of Arizona

Geohack link: geohack.toolforge.org/geohack.php?pagename=Feature&params=84.335_N_120.393_E_globe:mars_type:landmark

This looks so cool. And intriguing!

 

The Lagoon and Trifid Nebulae

Posted to r/Astronomy by u/the_astro_enthusiast

The Lagoon and Trifid Nebulae

the_astro_enthusiast

You can view a higher-quality image here: theastroenthusiast.com/the-lagoon-and-trifid-nebulae/

Equipment/Software:

  • Nikon D90
  • Sky-Watcher Star Adventurer
  • Star Adventurer tripod
  • Sigma 300mm prime lens
  • Bahintov Mask
  • Intervalometer
  • Laptop
  • Stellarium
  • Sharpcap
  • All Sky Plate Solver

Acquisition:

  • 174 x 2′ exposures (total just under 6 hours)
  • 30 Darks
  • 140 Bias
  • 20 Flat

Processing:

  • Stacked manually in pixinsight
  • Crop to get rid of artifacts
  • DBE
  • Deconvolution
  • Histogram strech
  • MLT for denoise
  • ArcsinH strech
  • Starnet
  • Some curves transformation
  • Added stars back

Follow my blog and Instagram for more photos!

 

Jezero

paul_wi11iams

The associated Nasa article clarifies this and adds a few verbal precautions

This illustration shows Jezero Crater — the landing site of the Mars 2020 Perseverance rover — as it may have looked billions of years go on Mars, when it was a lake. An inlet and outlet are also visible on either side of the lake.

 

A deep image of Leo triplet

Posted by u/mrdeepsky01 to r/Astronomy, 1 hour ago

A deep image of Leo triplet in just 100mins OC/ NGC 3628 Shows Tidal tail feature

 

First ever ‘all-sky’ colour image acquired on Mars.

Posted by u/paulhammond5155, 2 hours ago, to r/PerseveranceRover

First ever ‘all-sky’ colour image acquired on Mars. 5 Navcam images from Sol 73. Assembled by Damia Bouic into this hemispherical view. Note layers of thin clouds.

 

They certainly do look like meteors, or, more likely, debris, due to the low speed, but, I don’t know what to make of the “pause” at the end. If that’s what it is.

Fascinating.

 

r/spaceporn

Posted by u/Astronophilos, 10 hours ago

I’ve been working one week to make this ultra high-definition 80 MPx picture of the Moon that required 85,000 snapshots from two nights of observation (zoom in!)

Fabulous! Really! The pic is huge and is, indeed, great for zooming in.

 

Watch Stars Orbit Milky Way’s Black Hole in Nearly 20-Year Time-Lapse

VideoFromSpace
Jul 31, 2018

The NACO instrument on ESO’s Very Large Telescope was used to create this time-lapse video of stars orbiting the Milky Way’s supermassive black hole over the course of nearly 20 years. — Star Zooms Past Monster Black Hole, Confirms Relativity: www.space.com/41291-relativity…

Credit: ESO/MPE

HERE’S AN ARTICLE that goes into a lot more detail about what we see in the video, and relativity.

From the link.

For the first time ever, researchers have watched a star race past the supermassive black hole at the heart of the Milky Way, verifying that its motion showed the effects of general relativity, as predicted by Albert Einstein.
The stars of the Milky Way orbit a gargantuan black hole called Sagittarius A*, which is generally quiet as viewed from Earth, except for ripping apart the occasional object that ventures too close. The black hole’s mass is 4 million times that of the sun, and it exhibits our galaxy’s strongest gravitational field, making it — and a small group of stars orbiting it at high speed — a perfect proving ground for the extreme effects predicted by Einstein’s theory of general relativity.

This wont be news to some as its 3 years old. But what great video, 20 year timelapse…

SecretKnowledge
Sarcastic? Me? Never!!!
Member – Registered: 2/21/2011 – Location: Moved to Dublin – Mood: Moody – Member is offline.

posted on Apr, 27 2021 @ 02:34 PM

This is just excellent!

 

saturn rings

r/spaceporn

Posted by
u/berkantakarcan
6 hours ago

Saturn’s Rings

berkantakarcan
6 hours ago

NASA’s Cassini spacecraft captured this view of the Janus 2:1 spiral density wave in Saturn’s rings on June 4, 2017.

Image credit: NASA/JPL-Caltech/Space Science Institute

More info: www.space.com/38114-weird-waves-saturn-rings-cassini-photo.html

That is spectacular. Seriously. Looks like window blinds. Or a record!

The farther out we go, the weirder it gets.

ETA: Is it me? It looks like it’s moving. A commenter said that as well. Weird.

 

First Aerial Color Image of Mars

r/PerseveranceRover

Posted by
u/Naetius
3 hours ago

First Aerial Color Image of Mars

Naetius
6 hours ago

This is the first color image of the Martian surface taken by an aerial vehicle while it was aloft. The Ingenuity Mars Helicopter captured it with its color camera during its second successful flight test on April 22, 2021. At the time this image, Ingenuity was 17 feet (5.2 meters) above the surface and pitching (moving the camera’s field of view upward) so the helicopter could begin its 7-foot (2-meter) translation to the west – away from the rover. The image, as well as the inset showing a closeup of a portion of the tracks the Perseverance Mars rover and Mars surface features, demonstrates the utility of scouting Martian terrain from an aerial perspective.

The winding parallel discolorations in the surface reveal the tread of the six-wheeled rover. Perseverance itself is located top center, just out frame. “Wright Brothers Field” is in the vicinity of the helicopter’s shadow, bottom center, with the actual point of takeoff of the helicopter just below the image. A portion of the landing pads on two of the helicopter’s four landing legs can be seen in on the left and right sides of the image, and a small portion of the horizon can be seen at the upper right and left corners.

Mounted in the helicopter’s fuselage and pointed approximately 22 degree below the horizon, Ingenuity’s high-resolution color camera contains a 4208-by-3120-pixel sensor.

The Ingenuity Mars Helicopter was built by JPL, which also manages this technology demonstration project for NASA Headquarters. It is supported by NASA’s Science Mission Directorate, Aeronautics Research Mission Directorate, and Space Technology Mission Directorate. NASA’s Ames Research Center and Langley Research Center provided significant flight performance analysis and technical assistance during Ingenuity’s development. AeroVironment Inc., Qualcomm, Snapdragon, and SolAero also provided design assistance and major vehicle components. The Mars Helicopter Delivery System was designed and manufactured by Lockheed Space Systems, Denver.

Credit NASA/JPL-Caltech

OH, YAY, BRAVO!!!

ETA: Hey, here’s the altimeter graph from the first flight:

ginny altitude

 

Comparison between Ingenuity’s first and second flight

r/PerseveranceRover

Posted by
u/ma_che_ne_so
7 hours ago

Comparison between Ingenuity’s first and second flight

 

Sombrero Galaxy M104, 66 hour exposure.

r/Astronomy

Posted by
u/SPACESHUTTLEINMYANUS
3 hours ago

My 66 hour exposure of the Sombrero Galaxy M104

Sweet!

 

Ingenuity completed second successful flight!

r/PerseveranceRover

Posted by
u/–TheRedditor–
2 hours ago

Ingenuity completed second successful flight!

 

Perseverance view of ingenuity flying from r/PerseveranceRover

r/PerseveranceRover

Posted by
u/hasoni1111
4 hours ago

Perseverance view of Ingenuity flying

ETA:

r/space

Posted by
u/smm4983
3 hours ago

NASA’s Ingenuity Mars Helicopter Succeeds in Historic First Flight

nasa.gov/press-…