11–20 of 78 posts
As you walk your way down the table is there a correlation with elements being more “recycled” for lack of a better term? Ie. H and He are the basest elements and then everything else is formed through increasing amount of processes? Having a hard time articulating this one.
How did elements created by a merging neutron stars and dying low-mass stars get down to our planet?
How does a "merged" neutron star, "unmerge?" Or is most of the Au of the universe tied up in neutron stars? And how does that work given that neutron stars are mostly... neutrons?
This table raises a lot of questions for me: How does a "merged" neutron star, "unmerge?" Or is most of the Au of the universe tied up in neutron stars? And how does that work given that neutron stars are mostly... neutrons?
Like, seen across the universe unmerge action.
How did elements created by a merging neutron stars and dying low-mass stars get down to our planet?
How did elements created by a merging neutron stars and dying low-mass stars get down to our planet?
How did elements created by a merging neutron stars and dying low-mass stars get down to our planet?
Low-mass stars, like the Sun, will generally expand into many times their original size after hydrogen starts running out in their core. Much of these tenuous outer layers will be emitted during the final stages of the star, before the core collapses into a white dwarf.
How did elements created by a merging neutron stars and dying low-mass stars get down to our planet?
Two neutron stars merging is an extremely energetic event which emits vast amounts of degenerate neutron star material at speeds above escape velocity. Pretty much instantly after this material is liberated from the pressure and gravity of the neutron star, it starts decaying into normal matter, producing a vast menagerie of (generally very neutron-rich) elements, which then follow their decay chains until they end u…
Thanks - I had managed to miss the fact that being made in a neutron star collision implies that things like gold were once part of neutron stars.
I think this exceeds the coolness of having been in a supernova.
The image shown by wikipedia https://en.wikipedia.org/wiki/Chemical_element seems more complete and better laid out, and is also by cmglee ( https://commons.wikimedia.org/wiki/User:Cmglee ), based on data from Jennifer Johnson at Ohio State University ( http://www.astronomy.ohio-state.edu/~jaj/nucleo/ ): https://upload.wikimedia.org/wikipedia/commons/3/31/Nucleosy...
[1] https://apod.nasa.gov/apod/ap200809.html
P.S. After the comet C/2020 F3 (NEOWISE) is gone, pictures are again diverse and range from different fields of astronomy ;)
How did elements created by a merging neutron stars and dying low-mass stars get down to our planet?