Antennae colliding galaxies Hubble Space Telescope image The Antennae NGC and NGC are formed of two galaxies colliding due to mutual gravitational attraction The nuclei yellow of the galaxies are at lower left and upper right Numerous dark lanes of dust are seen silhouetted against the bright parts of the galaxies The interaction has caused a huge swathe of starbirth as seen by the abundance of young blue stars and the vast pink emission nebulae in which stars are born The Antennae lie some million light years from Earth in the constellation Corvus Image data collected by the Advanced Camera for Surveys in and