Where is the closest binary star system?

1 Answer
Phillip E.
Jan 13, 2016

Alpha Centauri A & B

Explanation:

Our nearest star system Alpha Centauri includes a binary star system. Alpha Centauri A is slightly bigger than the Sun and Alpha Centauri B is slightly smaller than the Sun. These form a binary system which is about 4.37 light years away.

There is a third star associated with the system called Alpha Centauri C or Proxima Centauri which is the closest star which is external to our solar syatem.

Related questions
See all questions in Scale of Earth, Sun, Galaxy, and Universe
Impact of this question
3155 views around the world
You can reuse this answer
Creative Commons License