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Cake day: June 15th, 2023

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  • Donjuanme@lemmy.worldtoScience Memes@mander.xyzLaunches
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    6 days ago

    What does engulfing the earth mean to you? The mass of the sun expanded to a body 1 au would not be very dense. My money says the earth would continue to orbit “inside the sun” for quite a while, but the orbit would degrade more quickly.

    But yes, I argue get them out of the earths gravity well and let Newton handle the rest, no reason to propel them in any direction, eventually they’ll get to the sun.





  • Donjuanme@lemmy.worldtoScience Memes@mander.xyzLaunches
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    6 days ago

    You are making 2 opposing assumptions there, 1) there is nothing to bump into in outer space, the earth picks up 43 tons of new mass every day.

    1. the earths orbit would decay, the earth is absolutely massive compared to the amount of mass gained, and also off gasses a significant amount of mass every day.

    If orbits don’t decay, why do even high orbit satellites need to make elevation corrections?

    If you put a small body into outer space it would absolutely be (slowly) effected by the miasma of particles out there.

    And let’s not forget we don’t have a time table for reaching the sun, and we aren’t aiming for the middle of the sun to see results. And as you approach the sun you will bump into more and more particles as they too are being drawn around the sun.


  • Donjuanme@lemmy.worldtoScience Memes@mander.xyzLaunches
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    6 days ago

    It’s an easy talking point from the Internet and high school text books, it is disregarding of many actualities of our universe. It would be true if the sun were an infinitely small point on a 2 dimensional plane with a perfect lack of friction.

    And while for instantaneous results it would be easier to get something out of the sun’s gravity well rather than hit the exact middle of the sun, practically, if you have time, and you don’t actually need it to hit dead center of the sun, it’s much cheaper and easier to incinerate something proximal to the sun than it is too send it out of the solar system.

    Also let’s not forget gravity sling shots work in both directions.