Tuesday, January 14, 2020

We are stardust

...and we just found the oldest yet.

https://www.theguardian.com/science/2020/jan/13/stardust-older-than-earth-and-sun-found-meteorite-australia

The grains of so-called stardust...solid material cast off by dying stars...are a billion years or so older than the sun. They were found in a meteorite that landed in Australia.

It's believed that they're connected to a boom in star formation triggered by a galactic collision with Gaia-Enceladus, about 7 billion years ago. We now know that galactic collisions trigger the birth of new stars.

And stardust is probably incorporated into the ground below our feet. Into us.

It's all part of a vast cycle of life in which we are temporally insignificant. It's all amazing.

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