Björn Jónsson

Earth's horizon from ISS shows the scene suffused with auroral display of greens, reds, purple & pink against a starry night sky. The Earth below is faintly illuminated with pale green by the aurora above.

Earth's horizon from ISS shows the scene suffused with auroral display of bright greens, reds & purple against a starry night sky. The Earth below is illuminated green by the aurora above.

Earth's horizon from ISS shows the scene suffused with auroral display of bright greens & reds & purple against a starry night sky. We are in the midst of the aurora.

Earth's horizon from ISS shows the scene suffused with auroral display of bright greens & reds & purple against a starry night sky. We are in the midst of the aurora.

'Sea Of Light'

Some high quality stills from the short film. Source photography by Zena Cardman on ISS is repaired, remastered & retimed.

The 4k UHD video with music by Jesse Gallagher can be viewed here...

youtu.be/0Izl-XNE9ZY

It might also be possible to obtain SRU images of Metis but I don't know if the flyby geometry makes this possible.

I also didn't expect it to last for nearly as long as it did. And I find it absolutely amazing that the best and highest resolution images of some regions on Ganymede, Europa and Io were obtained by JunoCam.

The Deep Space Network has frequently been in contact with the spacecraft over the past several weeks/months (see eyes.nasa.gov/apps/dsn-now/). I'm pretty sure the Juno mission has not ended.

As far as I know this is due to problems with the camera.

A wide view of the planet Mars fills the frame, shown as a curved, rust-colored world against black space. The bottom edge fades into darkness, marking the planet’s night side, while the upper portion is brightly lit by sunlight. Near the right side are three large, round volcanic mountains of the Tharsis region, each with a wide circular base and a darker central caldera, resembling shallow craters pressed into the surface. North of these volcanoes, stretching almost vertically across the upper right half of the planet, lies Noctis Labyrinthus and Valles Marineris: an immense system of deep canyons and fractured terrain that appears as pale, branching scars and cracks, partly softened by hazy, cloud-like atmospheric features. Near the center of the image, positioned between the volcanoes and the canyon system, a small dark oval appears against Mars’s surface. This is Phobos, one of Mars’s satellites. Its tiny size stands out sharply against the vast scale of the planet below.

1/n

2 NEW epic images of Phobos over Mars just released by @esa.int Mars Express

This view is especially striking, with Phobos between the Tharsis volcanoes and Noctis Labyrinthus–Valles Marineris

Full resolution 300MP(!) & info on: flic.kr/p/2rMW4so
Credit: ESA/DLR/FUBerlin/AndreaLuck CC BY 🧪🔭

No new JunoCam images have appeared since July but there are many older, spectacular images I still haven't processed. I processed this one recently. This is from the PJ14_21 raw image data obtained on July 16, 2018. Approx true color/contrast and enhanced versions. North is to the upper left.

Color image of Martian moon Phobos with large crater Stickney near center of the image.

Martian moon Phobos from Mars Express' HRSC camera.
A color composite of three images taken through ND, GRN, and BL filters.
Largest crater with bright splotches is Stickney.
North is up.

Date: September 19, 2025.

Credit: ESA\DLR\FU Berlin\D. Machacek.

The image is divided into four sections, each showing one of the gas giants against a black background. Top left: Jupiter. It appears as a large, round sphere with horizontal bands in shades of light brown, tan, and white. A bright white oval storm sits on the lower right side. A faint ring is visible alongside Europa, one of its satellites, which appears very bright with a star-shaped artifact. Top right: Saturn appears as a pale gold/brownish sphere with horizontal bands, encircled by a bright whitish, thin oval ring system. The atmosphere is showing off a few circle whitish storm-like features. Bottom left: Uranus. It appears as a smooth blue-green sphere with some whitish circular clouds around the pole that is facing the observer. Surrounding it is a bright circular ring system made up of thin white lines. The rings form a bright, symmetrical halo around the planet. Bottom right: Neptune. It is a blue sphere with slightly brighter and darker circular features on its atmosphere. It also has a thin ring system, dimmer and less defined than Uranus’s in this image, appearing as a faint double oval around the planet. Each planet has its name printed below it in white capital letters.

3/3 If you’ve been following my work this won’t come as a surprise. I’ve once again updated the family portrait of the Solar System’s giant planets captured in near infrared by JWST

Full size+info flic.kr/p/2oUkYSY 🧪🔭

I’ll keep updating it whenever an improved version of these giants is released🙂

#CASSINI HUYGENS #SATURN MISSION

Target Name: #Saturn #Rings
Start Time: 2010-05-30
Observed Distance to Ring Intercept (km): 1869511.149
instrument: Cassini #ISS
Camera: Narrow Angle 7x Ir1 Grn Uv3

opus.pds-rings.seti.org/holdings/pre...

NASA/JPL/j. Roger

Lepidodendron forest rain Photorealistic animation of a Carboniferous scene from 320 million years ago featuring Lepidodendron at various stages of growth.. Also featured is Noeggerathia…

Photorealistic animation of a Carboniferous scene from 320 million years ago featuring Lepidodendron at various stages of growth. Not AI. Created with Blender, Photoshop, & Premiere Pro.
#carboniferous #lepidodendron #flora #prehistoric #artadventcalendar
vimeo.com/1089774111?f...

Jupiter and at least two moons.

Tried something new. I used WinJUPOS to de-rotate the #JWST #Saturn 🪐 images. Filters (F150W2, F164N) and F212N. Makes the storms and other features better visible.🔭 #astronomy
Observation date: 2024-11-29

And this is an approximately true color/contrast version of the first image. I processed these images back in December 2015, in time for the Jupiter orbit insertion 20 year anniversary.

On this day back in 1995, the Galileo spacecraft performed its Jupiter orbit insertion burn. Due to problems with the tape recorder, no images were taken. However, these images showing the Great Red Spot were obtained on June 26, 1996 during the G1 orbit. The contrast and color has been exaggerated.

Moving clouds slowly reveal sea ice twisting and turning hypnotically off the east coast of Greenland.

Image of Uranus taken by the James Webb Space Telescope, showing a whitish north polar region, vivid blue-greenish atmosphere and a few whitish elongated storms visible around the pole. The planet is surrounded by clearly defined ring system set against the black background of space.

Fresh JWST view of Uranus taken Oct 6 2025 with NIRCam.

Full size & more info: flic.kr/p/2rByidu 🔭🧪
Credit: NASA/ESA/CSA/STScI/Andrea Luck CC BY

Proposal PI: Varun Bajaj
Proposal ID: 8975
Filters: F150W2-F162M, F410M

Alrighty, ready to see something really cool? (and maybe a little nauseating)

The evolution of Hurricane Melissa's mesovortices at peak strength.

1/3 You might’ve seen last week’s newly released JWST data of Planetary Nebula NGC2440, here’s my take on it 😵

Full size 4K image and more info in this thread 🧵 🔭🧪

Credit: NASA/ESA/CSA/STScI/j. Roger/Andrea Luck CC BY

CASSINI #SATURN MISSION

Planet: #Saturn
Start time: 2013-05-08
Instr.: #UVIS
Activity name: AURSTARE

t.me/landru79/838

NASA/JPL/j. ROGER

A large eddy can be seen to the upper right.

Another closeup of Saturn from Voyager 2 on August 21, 1981. This one shows a closer view of one of an eddy.

Uranus with rings and small elongated dots (tracks) around it.

Planet #Uranus 🪐 and inner moons with #JWST NIRCam 🔭 #planetsci Observation from this Monday (lol moon🌕day).

Filters: F150W2; F162M
Date: 2025-10-06 between 02:15:43 UT and 04:46:47 UT

Program: www.stsci.edu/jwst-program...

A distant shot of Saturn's system while Cassini was still was on its way. This was taken after they had resolved the condensation residue issue on the ISSNA optics by heating it, and still almost 2 years before Saturn arrival. Magnified 2x from original pixel scale.

Taken on 2002-10-21 14:43 UTC

A half-phased Io from Juno.

A more distant shot of Io, moon of Jupiter, showing Loki Patera, the dark feature in the upper center, from Juno as it receded from Io on December 30th, 2023.

Global color image of Mars from Hope Probe with north polar ice cap visible on the top of the image, Valles Marineris on the left and lots of clouds over Meridiani Planum on the right. Date: December 21, 2024. 14:46 UTC. Credit: Emirates Mars Mission (EMM)/EXI/D. Machacek.

Global color image of Mars from Hope Probe with north polar ice cap visible on the top of the image, Olympus Mons near the center, bright cloud over Alba Mons on the right near terminator and fan shaped clouds around Arsia Mons in the lower center. Date: December 5, 2024. 13:07 UTC. Credit: Emirates Mars Mission (EMM)/EXI/D. Machacek.

Global color image of Mars from Hope Probe with north polar ice cap visible on the top of the image, Gale crater (landing place of Curiosity rover) near the center and interesting cloud between Elysium Mons and Albor Tholus near terminator. Date: November 28, 2024. 15:20 UTC. Credit: Emirates Mars Mission (EMM)/EXI/D. Machacek.

Color image of crescent Mars from Hope Probe with south polar ice cap visible at the bottom of the image, the giant Tharsis volcanoes near the center, Noctis Labyrinthus in the center right near terminator and Olympus Mons volcano at the upper left of the image. Date: February 6, 2025. 04:04 UTC. Credit: Emirates Mars Mission (EMM)/EXI/D. Machacek.

A few selected images of Mars processed from a new batch of data from the EXI camera aboard the Hope probe.
The dates and times of the images and some details are in the ALT text.

I recently improved the color of my Voyager 1 map of Jupiter that I created in 2022. The main improvement is better synthetic green data (the original data doesn't include green).
Below are small previews of the old and new version of the map. The map is available here: bjj.mmedia.is/data/jupiter...

The morning sun shines it's first rays over the Nili Planum region on Mars revealing small hills with sand ripples in between. The wall of Jezero crater behind the camera casts a long shadow that stretches over the foreground and the rover itself.

The sun was just 10 degrees above the horizon when NASA's Perseverance rover captured this morning view of Nili Planum yesterday. The rim of Jezero crater is casting a long shadow over the rover and foreground landscape. 🔭

Full res: flic.kr/p/2rt54pJ

Credit: NASA/JPL-Caltech/Simeon Schmauß

@askaniy.bsky.social I don't remember the details since I wrote the code a long time ago and parts of it are based on code I found somewhere. But this is from comments in the code: "ML_XYZtoRGB; D50/2 white point". So the conversion seems to be via CIE XYS space.

(4/4) In the improved images I also used a better method to combine the color channels to get an RGB image. Instead of 'channel mixing' to get synthetic red & blue I used Jupiter's visible light spectrum to estimate the spectrum at each point in the map and then computed RGB color from the spectrum.

(3/4) Compared to real green images, the green error drops down to ~25% of the error one gets when using the simpler weighted average - a major improvement. Color variations are more pronounced in the improved versions. In particular, variations in the strength of the red colors are more obvious.

(2/4) Because there is no green data, synthetic green images must be generated. Typically a weighted average of orange and violet has been used but in the improved version of the map I used a much better (and more sophisticated) way to generate synthetic green data.