Free Astronomy Magazine May-June 2015

SPACE CHRONICLES Looking deeply into the universe in 3D by ESO yond Hubble and reveal previously invisible objects. By taking very long exposure pictures of regions of the sky, astronomers have created many deep fields that have reveal- ed much about the early Universe. The most famous of these was the Universe. After staring at the Hub- ble Deep Field South region for only 27 hours, the new observations reveal the distances, motions and other properties of far more gal- axies than ever before in this tiny piece of the sky. They also go be- T he MUSE instrument on ESO’s Very Large Telescope has given astronomers the best ever three-dimensional view of the deep T he background image in this composite shows the NASA/ESA Hubble Space Telescope image of the re- gion known as the Hubble Deep Field South. New observations using the MUSE instrument on ESO's Very Large Telescope have detected remote galaxies that are not visible to Hubble. Two examples are highlighted in this composite view. These objects are completely invisible in the Hubble picture but show up strongly in the appropriate parts of the three-dimensional MUSE data. [ESO/MUSE Consortium/R. Bacon]