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Cake day: June 25th, 2024

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  • excral@feddit.orgtoScience Memes@mander.xyzLaunches
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    2 days ago

    To escape a body of mass you need to have enogh velocity (kinetic energy) to overcome the gravitational pull of that body. You can imagine it like a ball sitting in a bowl. With little velocity it will just roll back and forth but if it’s fast enough it can roll out of the bowl and escape it’s influence.

    That critical speed is called “escape velocity” and it depends on mass and distance from a body. The escape velocity of earth (from the surface) is about 11.2 km/s and the sun’s escape velocity (from earth orbit) is about 42.1 km/s. Earth orbits around the sun at about 29.8 km/s. If you launch in the direction of Earth’s orbit, you will orbit the sun already at about 41 km/s, so you “only” need 1.1 km/s more to escape the sun, too.

    If you tried to reach the sun, you could launch in the opposite direction leaving you orbiting the sun at about 18.6 km/s. Since there is almost nothing in space you won’t slow down from friction and the orbit won’t decay. Instead you’d have to accelerate opposite the direction you’re traveling. Now, calculating exactly how much you’d need to decelerate isn’t trivial since you don’t want a stable orbit but an elliptical orbit that just touches the sun at the closest point (perihel). I don’t know how much deceleration that takes, but it’s propable that it’s easier than accelerating by 1.1 km/s to escape the sun.







  • The last times May 4 was on a Thursday were 2006, 2017 and 2023. The Core 2 wasn’t released until July of 2006 so I’d guess the correct year is 2017, but even then the hardware was already pretty dated. For reference, in 2017 the first generation Ryzen prozessors and Intel Kaby Lake (7th generation Core i) were around.


  • The alt right/populists turned politics basically into a game of us vs them where you associate with “your” party like you would with a sports team. If you say something against “their” party, they take it personally just like saying something bad about their favourite sports team. If “their” party screws up they are way more lenient, like they would be if their favourite does a foul. They win and lose with “their” party and make their personal success dependent on it. That might not be rational but it’s normal behaviour for human to associate with groups like that. It just shouldn’t happen with politicians and political parties.












  • No, not at all. There was also Quinn who won a Gold medal at the same Olympics. And Laurel Hubbard won silver at the World Championships and gold twice at the Commonwealth Games but was 43 years old by the time of the Tokyo Olympics.

    Additionally, you have to consider that the current rules regarding trans athletes are only in place since 2015. Before it was required to undergo sexual reassignment surgery and have your gender legally changed. And even after the changes, many trans athletes couldn’t compete at the Olympics because the governing bodies of their sport are more restrictive. So even if trans athletes have a “big advantage”, there are plenty ways to explain their lack of presence at the Olympics.