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Mars hosts many enormous extinct volcanoes (the tallest is Olympus Mons, 21.9 km or 13.6 mi tall) and one of the largest canyons in the Solar System (Valles Marineris, 4,000 km or 2,500 mi long). Geologically , the planet is fairly active with marsquakes trembling underneath the ground, dust devils sweeping across the landscape, and cirrus clouds .
More than 20 years after the Viking 1 images were taken, a succession of spacecraft visited Mars and made new observations of the Cydonia region. These spacecraft have included NASA's Mars Global Surveyor (1997–2006) and Mars Reconnaissance Orbiter (2006–), [19] and the European Space Agency's Mars Express probe (2003–). [20]
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The rover touched down at 80] roughly 1 km (0.62 mi) southeast of the center of its 7.7 km × 6.6 km (4.8 mi × 4.1 mi) [81] wide landing ellipse It came down pointed almost directly to the southeast, [ 82 ] with the RTG on the back of the vehicle pointing northwest.
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Size comparison between Phobos, Deimos and the Moon (right) Deimos is a gray-colored body. Like most bodies of its size, Deimos is highly non-spherical with triaxial dimensions of 16.1 km × 11.8 km × 10.2 km (10.0 mi × 7.3 mi × 6.3 mi), corresponding to a mean diameter of 12.5 km (7.8 mi) which makes it about 57% the size of Phobos. [7]
Bilen said he left Penn State with his bachelor’s degree in electrical engineering in 1991 and returned as a faculty member in 2000. “.I’ve been entrepreneurial since Day One.