The Crab Nebula has been one of astronomy’s most scrutinized objects for nearly a millennium, yet Hubble’s first fresh look in almost a quarter century shows it is still capable of surprise. The new ...

An image from NASA's Chandra X-ray observatory shows a glowing hand stretching across the cosmos with its palm and fingers sculpted from the wreckage of a massive stellar explosion. When you purchase ...

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 ...