this post was submitted on 09 Dec 2024
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[–] ThatWeirdGuy1001 97 points 2 months ago (19 children)

Should've been Jupiter instead of the moon. Since Jupiter protects the inner solar system from most asteroids and comets.

[–] [email protected] 21 points 2 months ago (12 children)

Here's a <1pg read about Jupiter and comets.

Jupiter’s gravity is thought to sling most of these fast-moving ice balls out of the solar system before they can get close to Earth... Without Jupiter nearby, long-period comets would collide with our planet much more frequently.

Consider that its powerful gravity prevented space rocks orbiting near it from coalescing into a planet, and that’s why our solar system today has an asteroid belt, consisting of hundreds of thousands of small flying chunks of debris. Today, Jupiter’s gravity continues to affect the asteroids – only now it nudges some asteroids toward the sun, where they have the possibility of colliding with Earth.

Editorial: It's a double-edged sword that favors us far more often than it doesn't. The human problem is that it only takes one collision to end us.

[–] ThatWeirdGuy1001 6 points 2 months ago (1 children)

I mean it's a mathematical inevitability that earth will get hit eventually. Having Jupiter there just gave us better odds. Luck doesn't last forever though.

[–] [email protected] 6 points 2 months ago (1 children)

I think the odds are better that we kill ourselves before a comet does it for us ;)

[–] ThatWeirdGuy1001 3 points 2 months ago (1 children)

Oh I've felt that way for decades. Humanity is never escaping this rock.

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

All we need to do is make sure we keep talking.

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