Spica is the 15th brightest star in the sky and the brightest in the Virgo constellation.
The star is also known as Alpha Virginis and is situated around 250 light-years from Earth. Spica is not a single star, but a binary system, meaning two stars orbit closely around one another, every four days. The stars lie approximately 11 million miles (less than 18 million kilometers) away from each other and appear as a single point of light in the sky.
