A new video by a NASA spacecraft orbiting Mercury is showing the closest planet to the sun like never before, revealing the rocky world as an oddly colorful planet.
Scientists created the new video of Mercury from space using images captured by NASA's Messenger spacecraft,
which has been studying the small planet from orbit since 2011. The
video shows a complete global map of Mercury as it spins on its axis and
was assembled using thousands of photos into a single view.
"This view captures both compositional differences and differences in
how long materials have been exposed at Mercury's surface," Messenger mission scientists at the Johns Hopkins University Applied Physics Laboratory
in Laurel, Md., explained in an image description. The laboratory
oversees the Messenger mission for NASA. "Young crater rays, arrayed
radially around fresh impact craters, appear light blue or white."
The colors of Mercury in the new video are actually enhanced to better
differentiate between the different kinds of terrain on the planet, the
researchers said. Altogether, the video shows 99 percent of the surface
of Mercury with a resolution of about 1 kilometer per pixel."Medium- and dark-blue areas are a geologic unit of Mercury's crust known as the 'low-reflectance material,' thought to be rich in a dark, opaque mineral," Messenger scientists wrote. "Tan areas are plains formed by eruption of highly fluid lavas."
NASA's Messenger spacecraft (the name is short for the MErcury Surface, Space ENvironment, GEochemistry and Ranging) launched in 2004 and became the first spacecraft ever to orbit Mercury when it arrived at the planet in March 2011. The spacecraft's $446 million primary mission ended in 2012, and it is nearing the end of its first one-year mission extension.
During its two years orbiting Mercury, the Messenger spacecraft is expected to snap more than 168,000 photos of the planet, mission managers said.
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