A planetary nebula in Sagittarius, 3000 light-years away, features waves 100 billion kilometres high, caused by supersonic shocks from a hot star's stellar winds. Hubble's image of the Carina Nebula ...

NASA captured this stunning image of Messier 75 or M75, also known as NGC 6864, which is a giant globular cluster of stars in the southern constellation Sagittarius.