The discovery could explain why younger stars seem to have more lithium than the Big Bang theory says they should have.

The nova eruptions come about when a white dwarf steals too much matter from a close red giant companion.

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. The star system GK Persei, ...

Astronomers have captured images of two stellar explosions—known as novae—within days of their eruption and in unprecedented detail. The breakthrough provides direct evidence that these explosions are ...