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18/10/2026

Astronomy - 3D 67P

Epxlanation: Put on your red/blue glasses and float next to the jagged and double-lobed nucleus of Churyumov-Gerasimenko, also known as Comet 67P . The stereo anaglyph was created by combining two images from the Rosetta spacecraft's narrow angle OSIRIS camera taken on July 25, 2015 from a distance of 184 kilometers. Numerous jets are emanating from the small solar system world's active surface near its closest approach to the Sun. The larger lobe is around 4 kilometers in diameter, joined to a smaller, 2.5 kilometer diameter lobe by a narrow neck. Rosetta's mission to the comet ended in September 2016 when the spacecraft was commanded to a controlled impact with the comet's surface . Keep those 3D glasses on though. You can check out a catalog of nearly 1400 stereo anaglyphs created from Rosetta image data on this website.

Date October 17, 2026Credit: ESA , Rosetta , MPS , OSIRIS - Stereo Anaglyph: Philippe Lamy and The TeamAuthors & editors: Jerry Bonnell, Cecilia Chirenti, Robert Nemiroff, Keighley RockcliffeA service of: ASD at NASA / GSFC,NASA Science Activation & Michigan Tech. U.

16/10/2026

Astronomy - CHASING THE INTERNATIONAL SPACE STATION


Explanation: Blasting into the predawn sky on Tuesday, October 13, a Falcon 9 rocket and Dragon spacecraft are headed for low Earth orbit in this stunning timelapse video captured from Indian Harbour Beach, Florida. Starting with a launch from Space Launch Complex 40 at Cape Canaveral Space Force Station, Falcon and Dragon are chasing the International Space Station on NASA's 35th Commercial Resupply Services mission. On cue, the space station itself enters the frame from the top. Almost 8 seconds into the 30 second timelapse. the bright streak of the ISS appears heading "down" toward the horizon. The first and second stages of the Falcon 9 are separating as the spectacular exhaust plume jellyfish grows, already catching the light of the rising Sun. The visible sequence of first stage boost back, re-entry, and landing burns begins around 20 seconds into the video. With the second stage following the ISS toward the distant horizon, the jellyfish plume continues to drift in the predawn sky, even after the successful first stage landing at planet Earth's Landing Zone 40.

Date October 16, 2026
Video Credit: Eric Holland
Authors & editors: Jerry Bonnell, Cecilia Chirenti, Robert Nemiroff, Keighley Rockcliffe
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.

Monde sous-marin - UN CONCOMBRE DANS LES ABYSSES : PSYCHROPOTES LONGICAUDA


Le concombre des mers Psychropotes longicauda se nourrit des sédiments qu'il trouve autour des nodules de manganèse qui tapissent le fond océanique. Pour économiser de l'énergie, il utilise sa « voile » comme moyen de locomotion. Cet individu a été photographié à 5.000 mètres de profondeur dans les abysses de l'océan Pacifique.

© Ifremer, Nordinaut cruise 2004

15/10/2026

Astronomy - THE MILKY WAY OVER MANHATTAN


Explanation: The city lights outshine the stars in the City That Never Sleeps. Who would have thought that the Milky Way could be visible in this sky? This image was taken with a filter that blocks most visible light, capturing instead only light in the near-infrared region of the electromagnetic spectrum (with lower energy than visible light). The astrophotographer's clever setup blocks most of the light pollution from the city: old incandescent light bulbs and some neon lights are still bright in the near-infrared, but fluorescent and LED light bulbs are not. Of course, stars are also bright in the near-infrared! This image is a reminder that we all live under the same sky, and astronomy allows all of us to learn more about humanity's place in the Cosmos.


Date October 15, 2026
Credit & Copyright Jason Kurth, Ty Buckley
Authors & editors: Cecilia Chirenti, Robert Nemiroff, Jerry Bonnell, Keighley Rockcliffe
A service of: ASD at NASA / GSFC,

Astronomie - EFFET MEDUSE SPATIALE


La fusée Falcon 9 de SpaceX, qui transporte la mission CRS-35 de la NASA, crée le célèbre effet « méduse spatiale » lors de son décollage depuis Cap Canaveral, en Floride. Le panache d’échappement de la fusée se dilate à haute altitude et est éclairé par la lumière du soleil, tandis que le site de lancement reste plongé dans l’obscurité, créant ainsi ce spectaculaire effet. Selon la NASA, cette mission achemine plus de 3 tonnes de matériel destiné à des recherches scientifiques. 

EPA/MAXPPP

07/10/2026

Astronomy - SUPERNOVA REMANT Pa 30

A red explosion extending radially like a firework over a dark field of stars.


Explanation: "Happy New Year!" No, wait, this is not a fireworks display. This image shows Nebula Pa 30, observed with the Gemini North Telescope in Hawai'i. It is likely the remnant of an old supernova explosion: separate historical records by Chinese, Japanese and Arabic astronomers tell of a "guest star" that appeared in the sky for 185 days in the year 1181. It is believed that this bright new point of light came from the supernova that caused the fireworks in Pa 30. Astronomers don't know exactly what happened in this unusual explosion, classified as a Type Iax supernova, but it is thought to be caused by the merger of two white dwarfs. The mysterious central star in the image is extremely hot and produces a strong wind, possibly forming the radial filaments. Look closely at them: those pearl-like knots stringing the filaments are 4 light-days in diameter. Understanding how a supernova created this amazing nebula continues an 845-year old mystery (and counting).

Date October 7, 2026
Authors & editors: Cecilia Chirenti, Robert Nemiroff, Jerry Bonnell, Keighley Rockcliffe
A service of: ASD at NASA / GSFC,

Monde sous-marin - LE PSYCHROLUTES MICROPOROS : UN POISSON A TÊTE BIZARRE


Du genre Psychrolutes, ce poisson téléostéen n'est pas à son avantage vu de face. Il a été observé au cours de l'expédition Norfanz à une profondeur de plus de 1.000 mètres, au nord-ouest de la Nouvelle-Zélande.

© Norfanz Founding Parties Photographer Kerryn Parkingson ; additional thanks to Peter McMillan and Andrew Stewart

03/10/2026

Astronomy - SELFIE AT VERA RUBIN RIDGE

 Fisheye wide-angle image of the Curiosity rover on Mars.


Explanation: On sol 1943 of its journey of exploration across the surface of Mars, the Curiosity Rover recorded this selfie at the south rim of Vera Rubin Ridge. Of course a sol is a Martian solar day, about 40 minutes longer than an Earth day. Curiosity's sol 1943 corresponds to Earth date January 23, 2018. Also composed as an interactive 360 degree VR, the mosaicked panorama combines 61 exposures taken by the small car-sized rover's Mars Hand Lens Imager (MAHLI). Frames containing the imager's arm have been edited out while the extended background used was taken by the rover's Mastcam on sol 1903. At the top of the rover's mast, sitting above the Mastcam, the laser-firing ChemCam housing blocks out the distant, 5 kilometer high peak of Mount Sharp. On Earth date August 26, 2026, Curiosity marked an total elevation gain of 1 kilometer in its trek from the floor of Gale Crater up the slope of Mount Sharp.

Date October 3, 2026
Credit: Image Credit: NASA, JPL-Caltech, MSSS - Panorama: Andrew Bodrov
Authors & editors: Jerry Bonnell, Cecilia Chirenti, Robert Nemiroff, Keighley Rockcliffe
A service of: ASD at NASA / GSFC,

02/10/2026

Astronomie - JUPITER LA PLANETE GEANTE QUI DOMINE LE CIEL


Plus grosse planète du Système solaire, Jupiter est brillante et très facile à repérer à l’œil nu. Elle permet des observations variées et passionnantes au télescope (et même aux jumelles). Découvrez-la !

Une planète passionnante et facile à repérer

Jupiter est un astre brillant qui se repère facilement à l’œil nu car son éclat domine celui des étoiles environnantes. Un débutant peut même la confondre avec Vénus, « l’étoile du Berger » même si elle n’est pas aussi brillante à cause de son éloignement.

C’est une planète gazeuse géante (11 fois la Terre en diamètre) qui peut être admirée facilement avec un petit télescope. Vous ne verrez pas autant de détails que sur les photos prises par les sondes d’exploration. En revanche, vous pouvez découvrir ses bandes nuageuses… et ses quatre principaux satellites !

Comment trouver Jupiter dans le ciel ?

Il suffit de savoir que la planète Jupiter est très brillante et de connaître ses périodes de visibilité. Vous devriez la trouver sans difficulté en balayant le ciel du regard. Au besoin, affinez votre recherche en consultant notre Carte du ciel en ligne qui vous montrera dans quelle direction se trouve la planète.

Photo d'observateurs sous le ciel étoilé avec la constellation du Lion

Jupiter est très brillante. Sur cette image, la planète géante s’était glissée entre les pattes de la constellation du Lion. Photo : Jean-Baptiste Feldmann.
Que peut-on voir avec un télescope ou une lunette ?

Le disque et les quatre principaux satellites

Jupiter est une cible de choix même si votre équipement est modeste. La moindre lunette astronomique révèle le globe jovien sous la forme d’un petit disque brillant. Cette vision confirme que vous avez bien affaire à une planète de notre Système solaire et pas à une étoile (les étoiles sont trop lointaines pour apparaître autrement que sous forme de point, même dans un télescope puissant).

On remarque immédiatement que ce petit disque est entouré de plusieurs petits points lumineux plus ou moins alignés de part et d’autre : ce sont les principaux satellites de Jupiter, découverts par Galilée il y a quatre siècles avec une lunette rudimentaire. Ces quatre satellites dits galiléens se nomment Io, Europe, Ganymède et Callisto. On ne les voit pas toujours tous les quatre, car certains sont parfois cachés derrière la planète, ou passent devant.

Ces satellites faisant le tour de Jupiter en quelques jours, il est très intéressant d’observer leur évolution soir après soir.

Stelvision

Astronomy - A NEW LUNAR CRATER: McGETCHIN

An image of the lunar surface with a large depression at the center surrounded by raised ridges that slope down back to the surface.

Explanation: A once-in-a-lifetime crater has appeared on the Moon! A comet or asteroid roughly the size of a humpback whale (approximately 10-20 meters, 30-60 feet) crashed into the Moon sometime between April and May of 2024. The Lunar Reconnaissance Orbiter (LRO), with its monthly monitoring of the Moon, captured today’s images of the lunar surface before and after the event. The resulting crater, named after Apollo-era lunar scientist McGetchin, is two soccer fields across. Craters of this size are only expected once every 132 years! Follow up thermal imaging revealed a large cold spot that surrounds the warm crater. Surface impacts will puff up the loose lunar sediment, or regolith, making it less dense and harder to retain heat. This event affected an area much larger than the visible crater, which will inform humanity’s understanding of surface impacts and the evolution of the Moon’s surface. It also reminds us all to be thankful for Earth's atmosphere.


Date:September 23, 2026
Credit:NASA/GSFC/Intuitive Machines
Authors & editors:Keighley Rockcliffe, Robert Nemiroff, Jerry Bonnell, Cecilia Chirenti
A service of:ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.

Astronomy - 3D 67P

Epxlanation: Put on your red/blue glasses and float next to the jagged and double-lobed nucleus of Churyumov-Gerasimenko, also known as Com...