Idk looks good to me
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this post was submitted on 04 Aug 2024
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Oh, holy hell, I just uncontrollably giggled at that for so long, my chest hurts. I sent it to my only group of friends, and it looks even better in smaller thumbnail form. Good gracious.
WANT COOKIES
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Toothless?
I mean she's not wrong. Isn't it, astronomically speaking, pretty rare that Earth has a moon that appears exactly the same relative size as its host star?
As far as we know it's extremely rare and a bit of a mystery how it came to be that way. One theory is that it was the result of a collision with another protoplanet in the early formation of the solar system.
But it isn't a mystery at all. The moon is moving away from us. For billions of years the moon's apparent size was larger than the sun. For billions of years later it will appear smaller. It's simply a lucky coincidence we live in this moment in time, in that regard.
I really think we should be called a twin planet system. It would be much more representative of our relationship with our satellite.
The "mystery" I was referring to was how we came to have such a large moon to begin with. It's very unusual, and moons on other terrestrial planets are much smaller and probably formed through completely different ways than earth's moon.
That isn't clear at all and I'm not even sure I agree, regardless. Hydrostatic equilibrium is a regularly occuring thing. No, I'm not looking up how regular. The Universe is mind-bogglingly enormous and everything is unusual. Have a good day.
Massive W for johannesvanderwhales
Imagine not even having a proper magnetic field smh
Earth mentioned raaaaaah ๐ฃ๏ธ๐ฃ๏ธ
How perfectly moon fits between earth and the sun is one of the weirdest things about our solar system for me.
You kidding?
There is loads of space between the Earth and the Sun to fit the Moon.
no way dude just look at it puff
Especially because it hasn't always and it won't forever. Humanity's existence just happens to coincide with the period of amazing eclipses.
Yep this. Call in sick, quit, max out your credit, go halfway around the world, do literally whatever is needed to be done to see a total eclipse if you haven't been able to experience it yet. It's unreal.
It's pretty fantastic, but not that good.
From what I've seen of future eclipse maps, it'll probably be a very long time before I get to see another eclipse at totality
Relevant XKCD: https://xkcd.com/2921/
Phobos is this big and still not round? Uh, what was the name, the size where stone behaves like a liquid. Well, Phobos doesn't have that yet?
I believe you are looking for hydrostatic equilibrium. There don't seem to be good answers for this online, but according to Robert Black on this Quora post:
There isn't a minimium per se but the generally accepted number for a mass to form into a sphere under its own gravity is 1/10,000th the mass of the Earth or 600 quintillion kg. As for size, it really depends on the composition of the body. The numbers are generally accepted to have a diameter of about 600km for a rocky body.
A quintillion is 1 x 10 to the 18th and Phobos has a mass of 1.0659 x 10 to the 16th kilograms and a diameter of 22 kilometers.
Yes that, thanks!
Phobos is tiny. It's just very close compared to our moon. 9500km as compared to our 384000km.
And the sun looks smaller from Mars because it's further away, making Phobos seem bigger
Ah, thanks! Also, Phobos is fast!
I think Mars eclipses might be better. It means they have googly eyes, and googly eyes make everything funnier.
Eye*
Only one
NUMBER ONE!
The void stares back
awesome pic, what telescope did you use?
Nailed it!
I'm so happy I wasn't the only one who saw this.
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