Origin of high-latitude auroras revealed18 December 2014
Origin of high-latitude auroras revealed18 December 2014 Auroras are the most visible manifestation of the Sun’s effect on Earth, but many aspects of these spectacular displays are still poorly understood. Thanks to ESA’s Cluster and NASA’s Image satellites working together, a particular type of very high-l...
The solar wind is swirly 18 December 2012
The solar wind is swirly 18 December 2012 Using ESA’s Cluster quartet of satellites as a space plasma microscope, scientists have zoomed in on the solar wind to reveal the finest detail yet, finding tiny turbulent swirls that could play a big role in heating it.
Earth’s magnetosphere behaves like a sieve24 October 2012
Earth’s magnetosphere behaves like a sieve24 October 2012 ESA’s quartet of satellites studying Earth’s magnetosphere, Cluster, has discovered that our protective magnetic bubble lets the solar wind in under a wider range of conditions than previously believed.
Earth’s magnetic field provides vital protection08 March 2012
Earth’s magnetic field provides vital protection08 March 2012 A chance alignment of planets during a passing gust of the solar wind has allowed scientists to compare the protective effects of Earth’s magnetic field with that of Mars’ naked atmosphere. The result is clear: Earth’s magnetic field is vital for keep...
Cosmic particle accelerators get things going16 November 2011
Cosmic particle accelerators get things going16 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.
'Dirty hack' restores Cluster mission from near loss30 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.