Solar radius ($R_{\odot }$)

The solar radius is a unit of measurement that represents the radius of the Sun. It is commonly used in astronomy to describe the size of stars and other astronomical objects in relation to the Sun. The solar radius is approximately \( R_{\odot} \approx 6.96 \times 10^8 \) kilometers (or about \( 4.36 \times 10^8 \) miles).