11–20 of 66 posts
I remember reading that dinosaur meteorite was discovered to have fallen in spring by those marks
surely regular pattern of getting in-out of heliosphere be noticeable?
Very interesting paper! Proposes (with lower bound of 1.3% chance) that the solar system may have passed through a local interstellar cloud, which would have caused the heliosphere to shrink to smaller than the orbit of the earth (0.22 au) some 2-3 mya. This may have affected the Earth's atmosphere and climate. Scroll down for some cool illustrations of a simulation showing how the heliosphere would have been tiny wi…
Why does this make me feel a little dirty and exposed ? Like, who knows what kinda alien DNA strands or spores are carried by the ISM?! I wonder if it would be possible to track biodiversity increases caused by the transit? Assuming there is biological material in the ISM, perhaps some of it made it into our biosphere! Very fun!
Every square meter of a space ship passing through this at the speed of light would interact with ~3e13 hydrogen atoms per second. I don't know if I did this correctly but that's only ~27kJ per second of mass energy. I thought it would be a lot more.
Yet another example of just how big space is, and how empty atoms are
Why does this make me feel a little dirty and exposed ? Like, who knows what kinda alien DNA strands or spores are carried by the ISM?! I wonder if it would be possible to track biodiversity increases caused by the transit? Assuming there is biological material in the ISM, perhaps some of it made it into our biosphere! Very fun!
Why does this make me feel a little dirty and exposed ? Like, who knows what kinda alien DNA strands or spores are carried by the ISM?! I wonder if it would be possible to track biodiversity increases caused by the transit? Assuming there is biological material in the ISM, perhaps some of it made it into our biosphere! Very fun!
Remember, modern humans appeared around 1.5-2M years ago, so this event, geologically speaking, happened shortly before the arrival of modern humans. Perhaps this event had something to do with us evolving.
Every square meter of a space ship passing through this at the speed of light would interact with ~3e13 hydrogen atoms per second. I don't know if I did this correctly but that's only ~27kJ per second of mass energy. I thought it would be a lot more.
> I thought it would be a lot more. Yet another example of just how big space is, and how empty atoms are
Every square meter of a space ship passing through this at the speed of light would interact with ~3e13 hydrogen atoms per second. I don't know if I did this correctly but that's only ~27kJ per second of mass energy. I thought it would be a lot more.
He hypothesizes that cosmic ray bursts are responsible for mutational leaps in evolution.
This seems similar.