Comments by "D. von N." (@D.von.N) on "Astrum" channel.

  1. To be more precise: the Earth is not the hottest it has ever been. We are. We haven't lived in those extreme conditions and by watching what is happening due to climate change now, we probably wouldn't survive it again on this population level. There would probably be a major reset to the civilisation. We have done too much damage to the balance in the ecosystem, including massive rainforest destruction, building mega cities covered with concrete and creating pockets of hot air that has impact on jet stream in the North. Permafrost is thawing and releasing carbon not only from a dozen thousands years old deposits, but also from the ancient deposits from millions years ago. This methane is unstoppable and there is a lot of it, far more than is in the atmosphere currently. And I see it pretty bleak regarding a unified governments effort globally, as each watches their own interests. Take just the gas and oil RuSSia cannot sell and let it burn instead. Closing the well would mean they won't be able to open it again and drill another one is expensive. So they shut it only when absolutely necessary. China increased coal use, Germans did too, freaking out over nuclear energy and now they want to fix the Nord stream 2, expecting more RuSSian gas pouring in in the future... Too often an electric car is charged via a gasoline generator and mining lithium also has its carbon footprint. And what about those millions battery powered scooters and cars produced in China, paid by the govt in subsidies and then parked in the fields, let to rot? Sometimes they catch fire and try to put off the lithium battery, especially if it ignites several other vehicles nearby... Hold your hats, folks, we are in for a rollercoaster ride.
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  2. I just wonder whether that potential civilisation will understand those lines and stuff on those discs we sent out. They might as well shoot it down or it might burn when entering atmosphere of some lifeless planet.
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  3. Seriously? How do we know there is an edge? No telescope can see the edge. Did you leave out a word 'observable'?
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  4. At about 11 minutes... that rock killing dinosaurs... although it is said that the Oort cloud is still a hypothesis, if it is real, it could be a rock sent from there towards Earth that killed the lizards, not from the supernova itself. But I am open to all options. Besides, I appreciate the clarity of the voice over. A hint of an Ozzy accent, but I can listen to it comfortably. I wish all voice overs were of this quality, but it isn't the case, unfortunately.
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  5. What I miss from discussions about colonising Mars is: due to its thin atmosphere (which we are unlikely to restore for obvious reasons), what about a sudden destruction of structures build for our protection, like a glass dome, by falling debris from the sky? Mars doesn't have an atmosphere that protects us from most of this debris on Earth. A lot of it burns in the atmosphere or is significantly reduced (and perhaps slowed down, I don't know) before it hits Earth.
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  6. We might live to finally understand that interstellar travel dream is futile. Physics of the space isn't on our side.
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  7. At 10:00 why is the comet burning when there is no air at that distance from Earth and why is its tail pointing towards the Sun (assuming it is in the top right location)?
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