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Cake day: June 15th, 2023

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  • Donjuanme@lemmy.worldtoScience Memes@mander.xyzLaunches
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    5 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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    5 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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    5 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.












  • Okay, as a biologist it really upsets me how that phrase is written off. I did an impromptu half hour lecture for my wife about how significant “the mitochondria is the powerhouse of the cell” is,

    The mitochondria is what ties everything on this planet together, it’s the one thing that ties all life together, it is the exact same mechanism in plants as it is in animals, it takes the same ingredients and does the same function, and comes from the same origin.

    There is no chain in our DNA that codes for the mitochondria, it exists outside of our DNA, it has no relationship with our DNA, it only fuels reading DNA and it’s decoding and replication, but it isn’t included in our genetics. It replicates itself, it exists as a separate entity, and it acts as the functioning unit for all energy within the cell.

    It would be like if when a child was born their lungs were provided by an outside source and had the same genetic material as everyone else’s lungs. Oh and puppy lungs, and crab lungs, and avocado lungs, and grass lungs, every single living thing on this plant has the same lung genetic material. And it has no clue that it serves this function, all it knows is ADP goes in, ATP goes out, and ATP is energy that fuels all function of all life.

    And it comes from the friggin mitochondria.

    Please be impressed with that little hitch hiker, it is the powerhouse that powers your neurons, grows the vegetables you eat, and makes life happen on earth.

    How will we know something extraterrestrial comes our way? They’ll have their own mitochondria, because something needs to power their cells, and it won’t be the same as ours.

    Writing off the mitochondria from biology is like writing off the exchange of goods in economics, or doing physics without the concept of mass, or art without feeling. There is nothing more basic, more fundamentally important to biology than the existence of the mitochondria, and it’s role as the powerhouse of the cell.

    MITOCHONDRIA IS THE POWERHOUSE OF THE CELL. That you know that makes me happy.