How to Get to Mars. Very Cool! HD
"How To get to
Mars" is a clip from the IMAX documentary "Roving Mars" from
2006. This is an edited short version.
From Wiki : Spirit, MER-A
(Mars Exploration Rover -- A), is a robotic rover on Mars, active from 2004 to
2010. It was one of two rovers of NASA's ongoing Mars Exploration Rover
Mission. It landed successfully on Mars at 04:35 Ground UTC on
January 4, 2004, three weeks before its twin, Opportunity (MER-B), landed on
the other side of the planet. Its name was chosen through a NASA-sponsored
student essay competition. The rover became stuck in late 2009, and its last
communication with Earth was sent on March 22, 2010.
The rover completed its
planned 90-sol mission. Aided by cleaning events that resulted in higher power
from its solar panels, Spirit went on to function effectively over twenty times
longer than NASA planners expected following mission completion. Spirit also
logged 7.73 km (4.8 mi) of driving instead of the planned 600 m (0.4 mi),
allowing more extensive geological analysis of Martian rocks and planetary
surface features. Initial scientific results from the first phase of the
mission (the 90-sol prime mission) were published in a special issue of the
journal Science. On May 1, 2009 (5 years, 3 months, 27 Earth days after
landing; 21.6 times the planned mission duration), Spirit became stuck in soft
soil. This was not the first of the mission's "embedding events" and
for the following eight months NASA carefully analyzed the situation, running
Earth-based theoretical and practical simulations, and finally programming the
rover to make extrication drives in an attempt to free itself. These efforts
continued until January 26, 2010 when NASA officials announced that the rover
was likely irrecoverably obstructed by its location in soft soil, though it
continued to perform scientific research from its current location. The rover
continued in a stationary science platform role until communication with Spirit
stopped on sol 2210 (March 22, 2010). JPL continued to attempt to regain
contact until May 24, 2011, when NASA announced that efforts to communicate
with the unresponsive rover had ended. A formal farewell was planned at NASA
headquarters after the Memorial Day holiday and was televised on NASA TV.
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