• RampantParanoia2365@lemmy.worldEnglish
        3·
        5 hours ago

        This person is appreciating a photo, and then he calls them a piece of shit for not appreciating said photo. He does this often? Is this a parody account, or the real scientist?

        • UnrepentantAlgebra@lemmy.worldEnglish
          3·
          3 hours ago

          Neil “Smoke” deGrasse Tyson.

          I don’t think this is the astronomer talking, unless he forgot to log out of his personal account.

  • mech@feddit.orgEnglish
    131·
    15 hours ago

    85% of earth are still completely uninhabited by humans, simply because it’s too inhospitable or not worthwhile to settle there.
    So why would anyone want to settle on Mars?
    Even if something apocalyptic happens on earth, like runaway global warming, the atmosphere and magnetosphere getting stripped away, or a new ice age – It would still be much more hospitable than Mars is.
    When we ever get the tech to terraform Mars, guess what: Then we can use the same tech to fix Earth.
    And when the sun explodes, Mars won’t save us either.

    There is no reasonable justification for putting humans on Mars.

    • hector@lemmy.todayEnglish
      4·
      14 hours ago

      It is all academic anyway, we are no where near being able to colonize mars, we are no where near “terraforming” it. No where near establishing the basics of life on an outpost. We would be hard pressed to land some dudes in one piece. We would be unable to land other equipment in the same place reliably. We wouldn’t be able to guarentee a water supply, an air supply, which could be gotten from the water.

      We could land a nuclear reactor with the astronauts I suppose which could help do all the energy intensive stuff they would need to do, like making air and water out of a frozen wasteland with an atmosphere that is almost non existent as the sun strips moliecules in the air to base elements with no magnetic shield to protect them as there is no liquid magma, it’s a dead planet.

      Also meaning the water isn’t reliably near the surface. The hot mantle boils water and drives it back to the surface, water is actually not that much of a percent of earth, it’s just all at the surface. Without that inner heat the water makes it’s way further and further down in the cracks of the Mars, and Mars is cracked to hell to begin with, hit by so many craters, and such towering mountains and valleys, and is partially why it’s already a dead planet to begin with. Regardless the water is not going to be reliably near the surface.

      So we can find a bit of co2, from there maybe with a nuclear reactor we could make water, and oxygen. But it’s not a very certain thing. And we don’t want to put these confidence men/clown kings like Musk in a position where we are trusting their exploding rockets with carrying nuclear payloads into space. If it exploded in midair spreading fallout across the world they would clap and pretend it was a success and our leaders would agree with them and tell everyone it’s safe while they decontaminate and upgrade their home and car and work filtration systems and don’t go outside, and make laws mandating we don’t minimize our time in the fall out zone just because this is 1984.

      Long story short, it’s a confidence game, we are generations away from the technology to even start in any real way, and we will fall apart long before then. As always musk is stroking off the imaginations of tech enthusiasts that trust the wrong (the worst we all trust the wrong people to different degrees,) people.

  • udon@lemmy.worldEnglish
    2·
    12 hours ago

    How large would the sun look to the human eye though? It’s tiny on photos, usually appears much bigger