Stars & Galaxies

How stars live and die, and the vast galaxies they gather into, from our Milky Way outward.

All Solar System Stars & Galaxies Cosmology Space Exploration Astrophysics

Space Stars & Galaxies

Betelgeuse is so big that if it replaced the Sun it would swallow the planets out to Jupiter

70 sec read

Space Stars & Galaxies

There may be more trees on Earth than stars in the Milky Way

60 sec read

Space Stars & Galaxies

More than half of all stars come in pairs or groups, not alone like our Sun

70 sec read

Space Stars & Galaxies

The Milky Way is on course to collide with the Andromeda galaxy in about 4 billion years

50 sec read

Space Stars & Galaxies

Red dwarfs are the most common stars in the Milky Way, about three-quarters of them

50 sec read

Space Stars & Galaxies

The Sun's core is about 15 million degrees Celsius, hot enough to fuse hydrogen into helium

45 sec read

◆ On this day

On this day in Stars & Galaxies

Browse all 4 by date →

4 Jul 1054

Space Stars & Galaxies

Skywatchers logged the supernova that became the Crab Nebula

45 sec read

13 Oct 1773

Space Stars & Galaxies

The Whirlpool Galaxy was discovered

45 sec read

9 Oct 1604

Space Stars & Galaxies

Kepler's Supernova blazed into view over Europe

45 sec read

11 Nov 1572

Space Stars & Galaxies

Tycho Brahe spotted a 'new star' that broke the fixed heavens

45 sec read