Comments on: New computer simulation of theorized impact that created the Moon https://behindtheblack.com/behind-the-black/points-of-information/new-computer-simulation-of-theorized-impact-that-created-the-moon/ Tue, 11 Oct 2022 11:33:25 +0000 hourly 1 https://wordpress.org/?v=6.9.4 By: David Telford https://behindtheblack.com/behind-the-black/points-of-information/new-computer-simulation-of-theorized-impact-that-created-the-moon/#comment-1363169 Tue, 11 Oct 2022 11:33:25 +0000 https://behindtheblack.com/?p=89017#comment-1363169 Chris, would Pluto/Charon count? Not exactly exo but it is an example of a moon relatively large to the primary body. Might be the same mechanism at play.

Somewhere in the past I read the impactor body probably formed in the same orbit, at one of the trojan points, 60˚ forward or behind the primary (early earth). Stable enough to form up a large body, but unstable in the long run. It gets loose, and being in the same orbit around the sun, they’re gonna meet.

To my amateur mind, it suggests this mechanism might not be so rare. Maybe most such collisions don’t result in large moons, but a notable fraction do?

]]> By: Chris https://behindtheblack.com/behind-the-black/points-of-information/new-computer-simulation-of-theorized-impact-that-created-the-moon/#comment-1363168 Tue, 11 Oct 2022 11:16:25 +0000 https://behindtheblack.com/?p=89017#comment-1363168 Are there any examples of “planet twins” or planets with very large single moons in the same orbit in the new exoplanet.groups? Perhaps this is a very rare and unstable occurrence.

]]> By: Blair Ivey https://behindtheblack.com/behind-the-black/points-of-information/new-computer-simulation-of-theorized-impact-that-created-the-moon/#comment-1363129 Tue, 11 Oct 2022 07:17:55 +0000 https://behindtheblack.com/?p=89017#comment-1363129 Ever since the Large Impactor theory gained notice, I’ve though it a good thing the impactor hit a glancing blow, as a more direct hit might well have turned proto-Earth into an asteroid belt. Curious if anyone has looked at what the maximum strike angle, impactor mass, and speed of impact would be for a planet to re-form. And what happens if two bodies come really close to each other, but don’t physically interact. I imagine there is a minimum distance for this. Do both bodies get rings from material pulled from the respective surfaces?

]]> By: James Street https://behindtheblack.com/behind-the-black/points-of-information/new-computer-simulation-of-theorized-impact-that-created-the-moon/#comment-1362847 Mon, 10 Oct 2022 18:08:41 +0000 https://behindtheblack.com/?p=89017#comment-1362847 Years ago I bought the book “Moon Rocks” by Henry S.F. Cooper off a used book table that gives an account of the Apollo moon rocks. It’s written at the middle school level. It said there were two opposing groups of scientists, as I recall one group thought the moon formed from a strike from a large object and the other that it formed independently at the same time as the earth. Both groups became so hostile towards the other that they wouldn’t talk to the other group. Once while one group was meeting someone from the other group opened the door of the room, yelled that his group was right and slammed the door. Even after the moon rocks were studied on earth each group still thought they were right.

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