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

If Betelgeuse replaced the Sun, it would swallow Mars

90 sec read

Space Stars & Galaxies

Will Andromeda hit the Milky Way? The odds are now 50-50

90 sec read

Space Stars & Galaxies

Red dwarfs are about 75% of stars, yet none is visible by eye

85 sec read

Space Stars & Galaxies

The Sun's core is 15 million °C and fuses by quantum tunnelling

85 sec read

Space Stars & Galaxies

Earth's 3 trillion trees likely outnumber Milky Way stars

95 sec read

Space Stars & Galaxies

Most stars have a partner, but most star systems are single

85 sec read

Space Stars & Galaxies

Porphyrion: the largest black hole jets, 140 Milky Ways long

85 sec read

Space Stars & Galaxies

HD 189733b, the blue planet where it rains glass sideways

85 sec read

◆ On this day

On this day in Stars & Galaxies

Browse all 5 by date →

4 Jul 1054

Space Stars & Galaxies

The Crab Nebula is the remnant of a supernova seen in 1054

95 sec read

13 Oct 1773

Space Stars & Galaxies

The Whirlpool Galaxy: found in 1773, first spiral ever seen

80 sec read

9 Oct 1604

Space Stars & Galaxies

Kepler's 1604 supernova: the last one seen in the Milky Way

85 sec read

11 Nov 1572

Space Stars & Galaxies

Tycho's 1572 'new star' proved the heavens could change

90 sec read

23 Nov 1924

Space Stars & Galaxies

How Hubble proved other galaxies exist: one star, V1

80 sec read