Mastodawn

Même jumelles, ces exoplanètes se parent de brumes différentes, un mystère qui émerveille les astronomes. https://nouvelles.umontreal.ca/article/2025/12/12/decouverte-d-un-monde-brumeux-meme-les-planetes-jumelles-ne-sont-pas-toujours-identiques #Space #Science #Astrophysics #Exoplanets #PlanetaryAtmospheres

Découverte d'un monde brumeux: même les planètes jumelles ne sont pas toujours identiques

Une équipe menée par des chercheurs canadiens découvre que l’exoplanète LP 791-18 c, une sous-Neptune tempérée, possède une atmosphère brumeuse sans équivalent parmi ses autres planètes jumelles.

https://nouvelles.umontreal.ca/

OptimusPrimeBot Apr 1, 2025

20 Years of Uranus Observations ✨🪐

#Miscellaneous #PlanetaryAtmospheres/Weather #Planets #SolarSystem #Uranus

⏩ 2 new pictures from Hubble (NASA) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=4&user=OptimusPrimeBot&ilshowall=1&offset=20250401050114

Uploads by OptimusPrimeBot - Wikimedia Commons

OptimusPrimeBot Mar 26, 2025

Neptune Auroras (Hubble and Webb Image) ✨🪐

#Neptune #PlanetaryAtmospheres/Weather #Planets #SolarSystem

▶️ 1 new picture from Webb (NASA) https://commons.wikimedia.org/wiki/File:Neptune_Auroras_%28Hubble_and_Webb_Image%29_%282025-104%29.png

File:Neptune Auroras (Hubble and Webb Image) (2025-104).png - Wikimedia Commons

Universe Today Feb 25, 2025

Can We Develop a More Accurate Habitable Zone Using Sulfur?

https://fed.brid.gy/r/https://www.universetoday.com/171077/can-we-develop-a-more-accurate-habitable-zone-using-sulfur/

Can We Develop a More Accurate Habitable Zone Using Sulfur?

The habitable zone is where planets could have liquid water on their surfaces, but not if they're actually habitable. In a new paper, astronomers propose a new way to map the inner edge of habitable zones by searching for sulfur dioxide (SO?) in the atmospheres of exoplanets. If there's SO?, this indicates that the planet doesn't have liquid water on its surface. Telescopes like Webb could scan planets for SO?, creating a more accurate map of habitable zones.

Universe Today

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𝙴𝚞𝚋𝚒𝚎 — 𝒒𝒖𝒊𝒆𝒕 𝒊𝒔𝒏’𝒕 𝒂𝒍𝒘𝒂𝒚𝒔 𝒑𝒆𝒂𝒄𝒆 Jan 1, 2025

I did not write a word of it, but I did the seminal research before I succumbed to #AutisticBurnout. It is still being cited in #Science articles 36 years later. I can still read & understand it at least. #PlanetaryScience #Exoplanets #Jupiter #CO #CH4 #GasGiants #PlanetaryAtmospheres #RedDwarf.

Bluesky

Bluesky Social

OptimusPrimeBot Dec 12, 2024

Hubble's Decade-Long Views of the Outer Solar System Planets ✨🪐

#Jupiter #Neptune #PlanetaryAtmospheres/Weather #Planets #Saturn #SolarSystem #Uranus

⏩ 4 new pictures from Hubble (NASA) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=7&user=OptimusPrimeBot&ilshowall=1&offset=20241212090616

Uploads by OptimusPrimeBot - Wikimedia Commons

Planetary Ecologist Nov 3, 2024

Extraterrestrial atmosphere (Planetary science 🪐)

The study of extraterrestrial atmospheres is an active field of research, both as an aspect of astronomy and to gain insight into Earth's atmosphere. In addition to Earth, many of the other astronomical objects in the Solar System have atmospheres. These include all the giant planets, as well as Mars, Venus and Titan...

https://en.wikipedia.org/wiki/Extraterrestrial_atmosphere

#ExtraterrestrialAtmosphere #PlanetaryScience #PlanetaryAtmospheres

Extraterrestrial atmosphere - Wikipedia

OptimusPrimeBot Oct 10, 2024

New Horizons Looking Back Towards Uranus (Artist's Concept) ✨🪐

#Jupiter #Multimission #PlanetaryAtmospheres/Weather #Planets #SolarSystem #Uranus

⏩ 4 new pictures from Hubble (NASA) https://commons.wikimedia.org/wiki/Special:ListFiles?limit=6&user=OptimusPrimeBot&ilshowall=1&offset=20241010090411

Uploads by OptimusPrimeBot - Wikimedia Commons

Dr. John Barentine FRAS Sep 26, 2024

Is the origin of the 'unknown UV absorber' in the atmosphere of #Venus attributable to interplanetary dust particles? There are some signs that it may be.

https://meetingorganizer.copernicus.org/EPSC2024/EPSC2024-284.html

#PlanetaryScience #PlanetaryAtmospheres #InterplanetaryDust #SolarSystem