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Cake day: June 9th, 2023

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  • If you look at pictures of people doing a “human flag pole” you’ll see that they all have their arms spread wide, with one hand above them and the other one below. And if you look at the guy in the background, you can see he is looking at the guys feet instead of at the man himself. So, yes, this old guy is absolutely being lifted up by his feet.






  • Live Your Lives@lemmy.worldtoScience Memes@mander.xyzW Earth
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    4 months ago

    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.