Waking The Dead


by Brian Koberlein | 7 March 2018 | post

Every star dies. Our Sun will shine for about 5 billion more years, but the time will come when it swells to a red giant for a time, then collapse to become a white dwarf. Larger stars live shorter lives, and can eventually collapse to become neutron stars.

This is a companion discussion topic for the original entry at https://blog.briankoberlein.com/waking-dead/


When two stars orbit each other closely, material from one star can sometimes transfer to the other.

How close is close? Almost touching close?


A few astronomical units. When a red giant swells up, it can become larger than the orbit of Earth, and the outer layers are pretty tenuous. It doesn’t take much pull for the neutron star or white dwarf to capture it.