Eta Carinae nebula. Coloured Hubble Space Telescope (HST) image of part of the Eta Carinae nebula. This large pillar of cold hydrogen gas and dust is the site of star birth. The narrow pillar (pointing towards top left) alone measures one light year in length. Two stellar jets, or Herbig- Haro objects (white streaks) are seen bursting from the cloud. The ultraviolet radiation in these jets, which are formed by the young hot stars, is slowly eroding the pillar. The Eta Carinae Nebula is around 10,000 light years from Earth in the constellation of Carina. Image taken using Hubble's Advanced Camera for Surveys.