Forget Skippy: Wallaby and Dingo, the radio telescopes in the Australian outback set to discover 700,000 new galaxies in 2013

Australian scientists unveil Wallaby and Dingo, the radio telescope network in the outback they hope could discover 700,000 new galaxies in 2013 The two new sky surveys will use data from an array of 36 antennas each 12 meters (40 feet) acrossProject is also the first building block in the world's largest telescope, the Square Kilometre Array (SKA) which will be based in both Australia and South Africa | UPDATED: 02:08 GMT, 1 January 2013 Two Australian sky surveys named Wallaby and Dingo are expected to discover 700,000 galaxies over the course of the new year.

Rare "rainbow clouds" shimmer in the night sky over Scotland in these astonishingly beautiful pictures

Shepherd's delight: Rainbow coloured 'mother-of-pearl' clouds shimmering in the night sky over Scotland Unusual formation spotted over the Outer Hebrides just before sunriseMethane reacts with ozone in the atmosphere to create the dazzling display | UPDATED: 10:13 GMT, 17 December 2012 These breathtaking images show an extremely rare, multi-coloured cloud hovering over a Scottish island at night. The dazzling sight appeared over the island of Scalpay, in the Outer Hebrides, just before sunrise on December 9. Amateur photographer Jez Wheeler was lucky enough to be in the right place to capture the perfect shots of the cloud, known as a 'mother-of-pearl' or Nacreous cloud