Alpha Centauri System - Closest Stars to Our Solar System

The video provides an overview of the Alpha Centauri star system, which is a triple star system located 4.37 light years away from Earth. It details the characteristics of Alpha Centauri A and B, which are sun-like stars, and Proxima Centauri, a red dwarf star. The video explains their masses, luminosities, and orbital dynamics, highlighting Proxima Centauri as the closest star to the Sun.

What is the distance of the Alpha Centauri star system from the Sun?

• 6.89 light years

• 5.67 light years

• 4.37 light years

• 3.24 light years

Which stars form the binary pair in the Alpha Centauri system?

• Alpha Centauri A and Proxima Centauri

• Alpha Centauri B and Proxima Centauri

• Alpha Centauri A and Alpha Centauri B

• Proxima Centauri and the Sun

How does the mass of Alpha Centauri A compare to the Sun?

• 1.5 times the Sun's mass

• 1.1 times the Sun's mass

• 2.0 times the Sun's mass

• 0.9 times the Sun's mass

What is the luminosity of Alpha Centauri B compared to the Sun?

• 2.0 times the Sun's luminosity

• 0.4 times the Sun's luminosity

• 1.5 times the Sun's luminosity

• 0.9 times the Sun's luminosity

Who discovered Proxima Centauri and in which year?

• Robert Eins in 1915

• Albert Einstein in 1920

• Galileo Galilei in 1610

• Isaac Newton in 1687