What is the closest star to our sun?Group of answer choicesAlpha CentauriBetelgeuseSiriusPolaris

Breakdown of the Problem

1. Identify the stars listed in the answer choices.
2. Determine their distances from the Sun.

Relevant Concepts

1. Alpha Centauri: The closest star system to the Sun, which includes Proxima Centauri.
2. Betelgeuse: A red supergiant star in the Orion constellation.
3. Sirius: The brightest star in the night sky, known as the Dog Star.
4. Polaris: Also known as the North Star, located near the celestial north pole.

Analysis and Detail

1. Alpha Centauri: Located about 4.37 light-years from the Sun.
2. Betelgeuse: Approximately 642.5 light-years away from the Sun.
3. Sirius: Roughly 8.6 light-years from the Sun.
4. Polaris: About 433 light-years distant from the Sun.

Verify and Summarize

The closest star (not including the Sun) is Alpha Centauri, at 4.37 light-years.

Final Answer

Alpha Centauri is the closest star to our Sun.