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 ...

Sir William Herschel's contributions to astronomy during the late eighteenth century are unrivaled. His lasting legacy is his dedicated all-sky survey of star clusters and nebulae, and these objects ...