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Mars Maven mission arrives in orbit
The US space agency's (Nasa) latest Mars satellite has arrived successfully in orbit above the planet.
Hurtling through space for the past 10 months, the Maven craft slammed on the brakes by firing its thrusters.
The 33-minute burn removed sufficient speed to allow the satellite to be captured by Mars' gravity.
Maven has been sent to study the Red Planet's high atmosphere, to try to understand the processes that have robbed the world of most of its air.
Today, the air pressure is so low that free water at the surface would instantly boil away.
http://www.bbc.co.uk/news/science-environment-29253788
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