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Exploration of Mars
The exploration of Mars has
been an important part of
the space exploration
missions of the Soviet Union
(later Russia), the United
States, Europe, and Japan.
Dozens of unmanned
spacecraft, including
... > full story
Phoenix (spacecraft)
The Phoenix is a planned
multi-agency Mars lander,
headed by the University of
Arizona's Lunar and
Planetary Laboratory, under
the direction of NASA,
scheduled to launch on
August 3, 2007. It is a
... > full story
Deimos (moon)
Deimos is probably an
asteroid that was perturbed
by Jupiter into an orbit
that allowed it to be
captured by Mars, though
this hypothesis is still in
some dispute. Like most
bodies of its size, Deimos
... > full story
Phobos (moon)
Phobos is the larger and
innermost of Mars' two
moons, and is named after
Phobos, son of Ares (Mars)
from Greek Mythology. Phobos
orbits closer to a major
planet than any other moon
in the solar system, less
... > full story
Browse Reference Articles
1 to 10 of 195 articles
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Astrobiology
Astrobiology is the study of life in space, combining aspects of astronomy, biology and geology. It is focused primarily on the study of the origin, distribution and evolution of ... > more -
Asteroid belt
The asteroid belt is a region of the solar system falling roughly between the planets Mars and Jupiter where the greatest concentration of asteroid orbits can be found. Despite popular imagery, the ... > more -
Dysnomia (moon)
Dysnomia, is a moon of the dwarf planet Eris. The satellite is about 60 times fainter than Eris, and its diameter is estimated to be approximately eight times smaller. Astronomers now know that three ... > more -
Mars Exploration Rover
NASA's Mars Exploration Rover (MER) Mission is an unmanned Mars exploration mission that sent two robotic rovers Spirit and Opportunity to explore the Martian surface and geology. Primary among the ... > more -
Neptune's natural satellites
Neptune has 13 known moons. The largest by far is Triton, discovered by William Lassell just 17 days after the discovery of Neptune itself. It took a hundred years to discover the second, Nereid. ... > more -
Voyager program
The Voyager program consisted of a pair of unmanned scientific probes, Voyager 1 and Voyager 2, launched in 1977. They were sent to study Jupiter and Saturn, using an advantageous planetary alignment ... > more
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