Tag Archives: Nucleus

Comets: Crash Course Astronomy #21

Hey, Phil Plait here and this is Crash Course Astronomy. Since humans have been human we’ve looked to the skies for portents of the future. The Sun, the Moon, the planets, the stars; they’ve all been used for prognostication. And so have comets. A fuzzy blob, moving slowly across the stars? How could soothsayers resist?… Read More »

The Most Dangerous Stuff in the Universe – Strange Stars Explained

Neutron stars are the densest things that are not black holes. Neutron stars are the densest things that are not black holes. In their cores, we might find the most dangerous substance in existence: In their cores, we might find the most dangerous substance in existence: strange matter᠎. A bizarre thing so extreme that it… Read More »