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Earlier quoted context omitted.
What makes you think life on Earth came from Mars?
Mars is smaller and cooled down before Earth. That means it had liquid water while the Earth was still too hot. Therefore, it's possible that life first appeared on Mars, and was later transferred to Earth on a meteorite.
Earlier quoted context omitted.
Perhaps, "boots on the ground" was flagged by an overzealous automatic moderation scheme?
Interesting. Indeed the wording is not great but a human would get the idea :-) I did notice that quite a few times when i write that i want space exploration and expansion it gets downvoted. So there may also be a crowd that thinks we should solve all problems on earth before going to space, as if thats possible or achievable.
It’s beyond obvious that water flew as rivers in Mars at some point, and looks like there’s some water there even now! Even life, is there any reason to think there WASNT some microscopic life there at some point? I doubt anyone thinks there’s viable life there even now (though one can’t 100% exclude the possibility). It’s like everyone kind of already knows these are the likely facts but we keep using these as scape…
I would argue that the main thing holding us back is the lack of funding. NASA's entire budget can't even compete with Meta's R&D department, so they have to take small steps. Investigate Mars, try to get people back on the moon (Artemis), and go from there. Eventually we'll get to a point where we can explore Europa properly and we can send people to Mars, and all that, but it's going to take time. Without enough fu…
Earlier quoted context omitted.
Interesting. Indeed the wording is not great but a human would get the idea :-) I did notice that quite a few times when i write that i want space exploration and expansion it gets downvoted. So there may also be a crowd that thinks we should solve all problems on earth before going to space, as if thats possible or achievable.
A batch of those people roll through every space related post and downvote things, but then the tide shifts later in the day. I'm pretty sure the vast majority of the users here are strongly in favor of getting humanity into space
How do we turn this into a meaningful political movement? My strongest pro argument in a political context is resource security and not having to rely on adversarial states. Economically, it means and endless supply of sources we need to build our increasingly complex devices. Also jobs. I see this as an existential benefit for advanced societies. But how do you bring this is front of average joes with the same intensity as current issues.
Mars lost all of its (surface) water presumably due to solar wind, and thus never had time to evolve complex life. Earth would have faced the same fate were it not for the fact that the Moon collided with us at some distant point in time, surrendering its iron core to ours. Now, our Rare Earth has an unnaturally large active iron core, resulting in an unnaturally efficient magnetic field which is able to protect our…
Commented this and got flagged: “We need boots on the ground to back the good science behind these findings.” Why is wanting to send people to mars to confirm or leverage these findings so offensive?
Mars lost all of its (surface) water presumably due to solar wind, and thus never had time to evolve complex life. Earth would have faced the same fate were it not for the fact that the Moon collided with us at some distant point in time, surrendering its iron core to ours. Now, our Rare Earth has an unnaturally large active iron core, resulting in an unnaturally efficient magnetic field which is able to protect our…
I have very little reason to believe life evolved in Earth or even in Mars for that matter. The more likely scenario is that there’s rocks floating around everywhere that have spores of life throughout the galaxy ready to seed a suitable planet in geologically instantaneous timelines. That will explain the extremely rapid emergence of life on earth initially while it took a few billion years to evolve any further. In…
1. How exactly are these spores of life getting into asteroids and being pinged around the Universe? The mechanism seems absurd to me. Earth is teeming with life, but outside of our explorations I believe none of it escapes our planet at all.
2. The life that would reach us would be already specialised for whatever environment it came from, and I would imagine would result a lower amout of variety, since it's already a successful species. But on our planet we have a massive amount of variety, which I believe points more to a bootstrapped start where competition was less intense, and odd things could develop, which were later outcompeted (see the Cambrian explosion).
Disclaimer: Not even a biologist, but I'm more willing to accept that life started and evolved here. Of course that might all be cast in doubt if we detect masses of life on asteriods or metoerites, but the first attempt at that seems to have come up with nothing so far.
I dream that in my lifetime we’ll find signs of any form of life having existed on Mars. What a momentous discovery for humankind that would be!
0: If Loud Aliens Explain Human Earliness, Quiet Aliens Are Also Rare - https://iopscience.iop.org/article/10.3847/1538-4357/ac2369
It’s beyond obvious that water flew as rivers in Mars at some point, and looks like there’s some water there even now! Even life, is there any reason to think there WASNT some microscopic life there at some point? I doubt anyone thinks there’s viable life there even now (though one can’t 100% exclude the possibility). It’s like everyone kind of already knows these are the likely facts but we keep using these as scape…
I would argue that the main thing holding us back is the lack of funding. NASA's entire budget can't even compete with Meta's R&D department, so they have to take small steps. Investigate Mars, try to get people back on the moon (Artemis), and go from there. Eventually we'll get to a point where we can explore Europa properly and we can send people to Mars, and all that, but it's going to take time. Without enough fu…
Their budget is actually absurdly large. The problem is they are mandated to engage in vanity projects like Artemis, which don't do anything to contribute to science at all.
Mars lost all of its (surface) water presumably due to solar wind, and thus never had time to evolve complex life. Earth would have faced the same fate were it not for the fact that the Moon collided with us at some distant point in time, surrendering its iron core to ours. Now, our Rare Earth has an unnaturally large active iron core, resulting in an unnaturally efficient magnetic field which is able to protect our…
I don't know that the collision with the moon is the secret here or not. I think it's complex.