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Science

marble falls

(63,273 posts)

2. The question is: did Mars hold onto its atmosphere and free water long enough ...

Reply to Omnipresent (Reply #1)

Fri Jul 14, 2023, 08:48 AM

Jul 2023

... on a Nova program about Mars I finally watched last night, there is thought that because Mars didn't get big enough to have a molten core as Earth does, it didn't have the magnetic fields needed to hold onto the atmosphere.

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NASA rover finds evidence of carbon-based chemistry in Martian crater [View all] Judi Lynn Jul 2023 OP

Life there could have been possible at one time. Omnipresent Jul 2023 #1

The question is: did Mars hold onto its atmosphere and free water long enough ... marble falls Jul 2023 #2

Additionally, it's a cold planet too fat from the sun, as well. Omnipresent Jul 2023 #3

Being able to hold onto an atmosphere helps keep a planet warmer, as does a molten core ... marble falls Jul 2023 #4

Good to know. Omnipresent Jul 2023 #5