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Stickney Crater on Phobos may reveal if Mars' moon is captured asteroid or impact debris

Stickney Crater offers clue to competing origin theories

1 Sep 19 · 4d ago · 1 article · 1 source · development 1 of 2

The 9 km diameter crater holds different implications depending on Phobos' history: if the moon formed from Mars impact debris, the collision occurred ~4.2 billion years ago; if Phobos was captured as an asteroid, the impact happened ~2.6 billion years ago. Mapping gravity around the crater could reveal whether it created a dense region of compressed material beneath it.

Stickney Crater offers clue to competing origin theories
sciencedaily.com

“You would assume that such an impact would have shattered Phobos, unless it has a very low homogeneous density, like a sponge that can absorb that kind of impact.”

Benjamin Haser, Doctoral student in planetary science · rss ↗

Benjamin Haser Doctoral student in planetary scienceThomas Andert Co-author of MNRAS paperJapan's MMX mission Upcoming sample return mission

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2Japan's MMX mission positioned to provide…
Sep 20Sep 21Sep 22yesterdaynow · 2:03 AM ET

What was reported 1 claim about this development

  1. 1 outlet A giant crater may reveal the origin of Mars’ doomed moon

    first by ScienceDaily, 4d ago

All 2 developments of Stickney Crater on Phobos may reveal if Mars' moon is… →

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