An international team of astronomers using the NASA/ESA Hubble Space Telescope has discovered a ghostly ring of dark matter formed long ago during a colossal collision between two galaxy clusters. This is the first time that dark matter has been found with a distribution that differs substantially from the distribution of ordinary matter.
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Hubblecast 06: A battle of giants - telescopes in space and on the ground
Hubblecast 05: Hubble discovers ring of dark matter
Hubblecast 04: Hubble Finds Multiple Stellar 'Baby Booms' in a Globular Cluster
Hubblecast 03: Celebrating Hubble's 17th birthday with violent stellar fireworks
Hubblecast 02: Galaxy bars and supermassive black holes
Welcome to the Hubblecast!
Hubblecast features news and Images from the NASA/ESA Hubble Space Telescope.
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International Olympiad on Astronomy and Astrophysics – Volos 2013-HDR timelapse