The Most Extreme Objects Ever Discovered Black holes are among the universe's most mysterious and fascinating objects. They form when massive stars die and collapse in on themselves, resulting in a region where the gravitational pull is so strong that nothing, not even light, can escape. Scientists... Sign in to see full entry.
What are Core Collapse Supernovae? A huge star's core collapses, at the end of its life, to produce a core collapse supernova, also referred to as a type II supernova. But what does that mean and why does it occur? Let us first define a big star. These are stars with masses at least eight times... Sign in to see full entry.