My wonderful friend @spidrwoman.bsky.social has been studying these beautiful features called "Lake Stars". They occur on Earth, but also on a moon very far away - Jupiter's moon Europa. Here, they might reveal the presence of liquid water underneath an icy shell covering the moon's surface.

Moving boulders and gullies that look suspiciously like rivers, not on Earth but on Mars! For years scientists have wondered about this; is this evidence of water on Mars? Earth scientist @lonnekeroelofs.bsky.social discovered that CO2 plays a pivotal role. youtu.be/h6qzVV6uI5U?...

Call for Abstracts 📣 Our session "Planetary Geomorphology and Surface Processes" - GM6.1, at the EGU (3-8 May 2026 in Vienna) will provide a platform for cross-planetary discussion on geomorphological and geological processes. Abstract deadline is January 15!

Some of the dune fields on #Mars form unique parallel channels called "linear dune gullies." New evidence suggests that these channels were formed by sliding and burrowing blocks of CO2 ice, rather than by liquid water as previously theorized. 🔗 buff.ly/Qpt5cqx #AG#AGUPubsl#Planetsp#SpaceScience

The #Planetary Geomorphology Image 📸 of the Month November is now online! Dr. Susana del C. Fernández takes us to the moon, in a search for for lithium and water ice! 🔋🧊🌕 planetarygeomorphology.wordpress.com/2025/11/01/l...

It's a phenomenon never seen before. Under normal conditions it doesn't even occur on Earth: the carving of gullies by CO2 ice blocks. Earth scientist @lonnekeroelofs.bsky.social proved that this may explain the formation of dune gullies on Mars www.uu.nl/en/news/myst... @astrobiologyou.bsky.social

The IAG #Planetary Gemorphology Image of the Month 📸 October is online! Dr. Abdallah Zaki takes us on a field trip to ancient Mars, by studying hourglass-shaped landforms ⌛ - remnants of source-to-sink river systems💧🌕🧐👩‍🚀 #Mars #rivers #space planetarygeomorphology.wordpress.com/2025/10/01/h...

‪The IAG #Planetary Gemorphology Image of the Month 📸 for September is online! Dr. Anna Szynkiewicz shows evidence of late fluid flows in Gale crater, as she compares Martian sulfate-rich salt deposits with those on Earth! 🧂💧👩‍🚀 planetarygeomorphology.wordpress.com/2025/09/01/b...

The IAG #Planetary Gemorphology Image of the Month 📸 for August is now online! A team of researchers discusses the colourful and bright dusty halos that occur on Martian sand dunes in early spring. The halos are a good indicator of mass-wasting driven by the seasonal sublimation of CO2 ice! 🌕😇✨

‪The IAG #Planetary Gemorphology Image of the Month 📸 for April is now available. Undergraduate student Kyleshaquill Fred Velez takes us to Enceladus, an icy moon of Saturn, where mass wasting occurs on the steep slopes along tectonic features. planetarygeomorphology.wordpress.com/2025/04/01/p...

Our new image of the month blog post is available on our website! This month a team of wonderful scientists shared their work on Martian clouds. The images are stunning! 😍 #Mars #clouds