View Full Version : STEREO Catches Mercury Acting Like a Comet

2010-Sep-23, 05:50 PM
The STEREO mission to study the Sun also has observed some unusual comet-like features exhibited by the planet Mercury, with a coma of tenuous gas surrounding the planet and a very long tail extending away from the sun. These types of features had been seen before from telescopes on Earth, but the STEREO observations are [...]

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