Björn Jónsson

Fly over Africa with Juice 🧃 Destined for Jupiter, @esa.int's Juice mission recently flew past Earth. Along the way, it pointed its science camera towards Africa 🌍 Curious what it saw? Explore this huge image strip here 👉 www.esa.int/ESA_Multimed... 🔭🧪

Saturn's north polar region in natural color and near-infrared false color. Processed using images taken by Cassini on November 15, 2008. flic.kr/p/2sGeEK3 flic.kr/p/2sG9jKz

New Horizons LORRI image colorized using MVIC CH4/blue filter data, processed to roughly approximate natural color. Taken on March 1, 2007. Distance: 2.3 million km Credit: NASA / JHU / APL / Gordan Ugarković live.staticflickr.com/6003/6008547...

More martian clouds today #NASA's #Mars rover #Curiosity 2026-10-22 Sol 5051: Right Navigation Camera mars.nasa.gov/raw_images/1... NASA/JPL-Caltech/j. Roger

I have been working on visualizing the appearance of proposed space mirrors on the night skies. As the beam approaches it appears as a column of light emerging from the darkness. At the beam center of a 600 km high 54 m. mirror the reflection gives a light similar to that of 38 Full Moons, 9.5 Lux.

OTD in 1975 a machine from Earth took the first photo ever from the surface of another planet. Venera 9 at Venus. 🧪

Last night, NOAA-20 captured a beautiful view of Super Typhoon Champi illuminated by the moon.

Digital Painting #Art #SpaceArt of #Jupiter as it would have appeared on 1927 October 2nd at 12:40 AM GMT. This is based upon photographs taken by W.H. Wright using the Lick Observatory's 36" Great Refractor.

Cassini WAC sequence of 18 frames taken December 29, 2000 spanning just over 2 hours. It shows Jupiter rotating with its Great Red Spot in view and Ganymede orbiting on the planet's far side. Distance: 9.86 million km Phase angle: 53 deg More details at flic.kr/p/acS6sY

Despite radiation and Trump's efforts to kill Juno, our only envoy around Jupiter, this plucky spacecraft still works and is taking images. Here are three examples taken by SRU camera during orbits 77 and 78, showing dark side of Jupiter and its auroras. Credit: NASA/Caltech-JPL/SwRI/D. Machacek.

I have added yet another global map of Jupiter to my website. The new map is an updated version of a map I originally created in 2002 (!). The new version is geometrically more accurate and the color is better. It's available here: bjj.mmedia.is/data/jupiter... A test render created using the map:

This Artemis II eclipse is giving me Clementine 1994 vibes with Venus in the background.

Webb and Hubble join forces to share the most comprehensive view of Saturn to date 🪐 Hubble reveals subtle colour variations across the planet, while Webb senses clouds and chemicals at many different depths in the atmosphere 👉 https://esawebb.org/news/weic2606/ 🔭 🧪

Prismatic warp effect done in Lightwave 11.6

A cosmic first! 🚨 Hubble has spotted a comet that slowed and reversed its spin. Outgassing jets acted like thrusters, literally pushing it into a new rotation, shown here in this science visualization: https://news.stsci.edu/4c2u6hv

Here is my reprocessed version of the Juice NavCam images of comet 3I/Atlas taken last November shortly after it's closest approach to the sun. 🧪🔭 For this animation I removed the static noise and aligned the images to the nucleus. Credit: ESA/Juice/NavCam Processing: Simeon Schmauß CC-BY-SA

Delighted to see our WISPIT team announce the second directly imaged exoplanet from the WISPIT 2 system! Led by Chloe Lawlor (Galway) with Richelle van Capelleveen (Leiden), we also have a spectrum of the inner, more massive planet, showing carbon monoxide features. ☄ #exoplanet #astrodon

#Emirates #Mars Mission 🌈 مسبار الأمل #Mars #Phobos #potato 1 2025-06-04 Orbit: 698 Spacecraft altitude: 20.491 km #EXI 635 546 437 filter Mode xos1 sdc.emiratesmarsmission.ae UAESA/Mohammed bin Rashid Space Centre/j.Roger

NASA Earth Observatory image of the day Cañon Fiord’s Whirling Waters science.nasa.gov/earth/earth-... Credits: images by Lauren Dauphin, using Landsat data from the U.S. Geological Survey. 🧪🔭

Seasonally recurrent annular cyclone on Mars in processed images from newly released data from the EXI camera system onboard the Hope probe (EMM - Emirates Mars Mission). The images were taken on August 7, 2025 between ~12:30 and 18:10 UTC. Credit: Emirates Mars Mission (EMM)/EXI/D. Machacek.

🚀 10 years ago, our largest and most sophisticated martian explorer left Earth behind. To mark the launch anniversary, here are 5 remarkable things @esa.int's Trace Gas Orbiter (TGO) was made for 🧵👇

🧃 Juice update! 👩‍💻 Science teams are busy analysing the 3I/ATLAS data received from five Juice science instruments ☄️ They're also looking forward to a star occultation by Jupiter’s moon Kallichore on 18 March, which could refine its known position – valuable data for a possible 2031 flyby. 1/2 🔭🧪

Recent painting of a couple of exomoons. #SciArt #spaceart #astronomy #Exoplanets

Cool views of lunar highland mountains from Apollo 17. Zoom to examine and you can get a good feel for the hight and ruggedness of the terrain. flic.kr/p/2rX149C flic.kr/p/2rX2SFo

The giant planets of the Solar System, by JWST.

Pluto and Charon from the approaching New Horizons spacecraft on July 14, 2015.

'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

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.

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.

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

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...

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

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

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

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