4 ms·
Considering that a supernova jettisons material 15,000 to 40,000 kilometers per second [0], it would only take a few decades for the material to reach earth fro
by Ma8ee 6y ago
Considering that a supernova jettisons material 15,000 to 40,000 kilometers per second [0], it would only take a few decades for the material to reach earth from a star in earth's proximity, which I interpret as a few light years away.
[0] https://www.nationalgeographic.com/science/space/universe/supernovae/ https://www.nationalgeographic.com/science/space/universe/su...
- DrBazza 6y agoAlso, the material swept up from the supernova, by the Earth is of the order of hundreds of tons (https://en.wikipedia.org/wiki/Death_from_the_Skies https://en.wikipedia.org/wiki/Death_from_the_Skies!)
- dredmorbius 6y agoThat would be 400--1,000 years for a supernova 50 light years distant, and clearly less for a closer event. Astronomically and geologically an eyeblink.