Space

8781 readers

100 users here now

Share & discuss informative content on: Astrophysics, Cosmology, Space Exploration, Planetary Science and Astrobiology.

Rules

Be respectful and inclusive.
No harassment, hate speech, or trolling.
Engage in constructive discussions.
Share relevant content.
Follow guidelines and moderators' instructions.
Use appropriate language and tone.
Report violations.
Foster a continuous learning environment.

Picture of the Day

The Busy Center of the Lagoon Nebula

Related Communities

🔭 Science

🚀 Engineering

🌌 Art and Photography

Other Cool Links

founded 1 year ago

MODERATORS

[email protected]

529

Comparison of a picture from Mars (left) to a picture from Earth (right) (lemmy.world)

submitted 2 months ago by [email protected] to c/[email protected]

65 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 14 points 2 months ago

Apparently, sandstone takes FAR less time to form than most people think. Apparently, some sandstone deposits have been found with roman artefacts inside. They were normal sand at the time and turned to sandstone since then.

Basically, it would take far less time than you would think to form sandstone on Mars. It's still proof of liquid water, but the lower end of the time estimate can be FAR shorter than you first think.