In November 1572, a brilliant new star appeared in the constellation Cassiopeia, shining so brightly that it was visible during the day. Danish astronomer Tycho Brahe carefully documented this ...

AUSTIN (KXAN) — A star’s fleeting final moments are something to behold. As it dies, it collapses in on itself before exploding with such intensity that it produces more light than the entire galaxy ...

AUSTIN (KXAN) — The insides of a star are on full display thanks to an explosion. New research published this month in Nature is revealing the details of a star's core. "This is the first time we have ...

Astronomers are a step closer to cracking one of the secrets of dark energy—the mysterious force believed to be causing the universe's accelerated expansion. Dark energy makes up approximately 68% of ...