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|  | |  | Cosmic particle accelerators get things going 16 November 2011 ESA's Cluster satellites have discovered that cosmic particle accelerators are more efficient than previously thought. The discovery has revealed the initial stages of acceleration for the first time, a process that could apply across the Universe.
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|  | |  | 'Dirty hack' restores Cluster mission from near loss 30 June 2011 Using ingenuity and an unorthodox 'dirty hack', ESA has recovered the four-satellite Cluster mission from near loss. The drama began in March, when a crucial science package stopped responding to commands – one of a mission controller's worst fears.
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|  | |  | Cluster encounters a natural particle accelerator 1 February 2011 ESA’s Cluster satellites have flown through a natural particle accelerator just above Earth’s atmosphere. The data they collected are unlocking how most of the dramatic displays of the northern and southern lights are generated.
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