Stars · Red giant

Aldebaran

65 light-years · Light crosses it in 3.4 minutes

Across
61.4 million km
Vs Earth
44× Sun
Mass
1.16 Suns

Open Aldebaran in Cosmic Scale

About

Aldebaran is the red eye of Taurus the Bull, an orange giant that has swollen to 44 times the Sun's width. It appears to sit among the Hyades star cluster but is actually less than half as far away.

The glowing red eye of Taurus the Bull.

At a glance

Distance65 light-years
Surface3,900 K
Brightness440 Suns
TypeRed giant

Did you know

  1. The Pioneer 10 probe is drifting toward it and will arrive in roughly two million years.
  2. Its name comes from Arabic for 'the follower', because it trails the Pleiades across the sky.
  3. It is bright enough that the Moon regularly passes in front of it, which is how its size was first measured.