A weird four-star system may lead the way to catastrophic supernovae - Syfy

Multiple star system HD 74438 is a four-star system with two binaries orbiting each other, and it could go supernova.

About 460 light-years from Earth lies the small but lovely star cluster IC 2391. It only has about 250 stars in it, but one of them is special because its actually four stars, a quaternary system. As… [+5525 chars]

full article...