The closest star to Earth is the **Sun** which is about **93 million miles** away. The next closest star system is **Alpha Centauri** which is about **4.37 light-years** away. The closest star in the Alpha Centauri system is **Proxima Centauri** which is about **4.24 light-years** away.
For reference, one light-year is approximately equivalent to **5.88 trillion miles (9.46 trillion kilometers)**.
