NASAのインスタグラム(nasa) - 4月28日 01時17分

Unmasking the Secrets of Mercury

Scientists have worked to learn more about the minerals and surface processes on Mercury using instruments on the MESSENGER spacecraft to diligently collect single tracks of spectral surface measurements since entering Mercury orbit on March 17, 2011. The track coverage is now extensive enough that the spectral properties of both broad terrains and small, distinct features such as pyroclastic vents and fresh craters can be studied.

The MESSENGER spacecraft is the first ever to orbit the planet Mercury, and the spacecraft's seven scientific instruments and radio science investigation are unraveling the history and evolution of the solar system's innermost planet. In the mission's more than four years of orbital operations, MESSENGER has acquired over 250,000 images and extensive other data sets. MESSENGER's highly successful orbital mission is about to come to an end, as the spacecraft runs out of propellant and the force of solar gravity causes it to impact the surface of Mercury near the end of April 2015.

Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

#Mercury #MESSENGER #NASA #space #Planets #SolarSystem #Planet

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