Monday, May 26, 2008

NASA's Phoenix Spacecraft Lands At Martian Arctic Site

Artist's conception of the Phoenix spacecraft as it lands on Mars

May 25, 2008 -- NASA's Phoenix spacecraft landed in the northern polar region of Mars today to begin three months of examining a site chosen for its likelihood of having frozen water within reach of the lander's robotic arm.

Radio signals received at 4:53:44 p.m. Pacific Time (7:53:44 p.m. Eastern Time) confirmed the Phoenix Mars Lander had survived its difficult final descent and touchdown 15 minutes earlier. The signals took that long to travel from Mars to Earth at the speed of light..

Phoenix is a robotic spacecraft on a space exploration mission on Mars under the Mars Scout Program. The scientists conducting the mission will use instruments aboard the Phoenix lander to search for environments suitable for microbial life on Mars, and to research the history of water there. The multi-agency program is headed by the Lunar and Planetary Laboratory at the University of Arizona, under the direction of NASA. The program is a partnership of universities in the United States, Canada, Switzerland, Denmark, Germany and the United Kingdom, NASA, the Canadian Space Agency, and the aerospace industry.

Phoenix launched on August 4, 2007, and landed at 23:38 Orbiter UTC on May 25, 2008 in Mars' water-ice-rich northern polar region of Vastitas Borealis at 68.2°N 234.3°W. It will now use its robotic arm to dig into the arctic terrain. Phoenix is the sixth successful Mars lander and the first since Viking 1 & 2 in 1976 to use powered descent.

During its 422-million-mile flight from Earth to Mars after launching on Aug. 4, 2007, Phoenix relied on electricity from solar panels during the spacecraft's cruise stage. The cruise stage was jettisoned seven minutes before the lander, encased in a protective shell, entered the Martian atmosphere. Batteries will provide electricity until the lander's own pair of solar arrays spread open.

Another critical deployment will be the first use of the 7.7-foot-long robotic arm on Phoenix, which will not be attempted for at least two days. Researchers will use the arm during future weeks to get samples of soil and ice into laboratory instruments on the lander deck.

Phoenix uses hardware from a spacecraft built for a 2001 launch that was canceled in response to the loss of a similar Mars spacecraft during a 1999 landing attempt. Researchers who proposed the Phoenix mission in 2002 saw the unused spacecraft as a resource for pursuing a new science opportunity. Earlier in 2002, Mars Odyssey discovered that plentiful water ice lies just beneath the surface throughout much of high-latitude Mars. NASA chose the Phoenix proposal over 24 other proposals to become the first endeavor in the Mars Scout program of competitively selected missions.

Mars as seen from Hubble Space Telescope


Rock strewn surface imaged by Mars Pathfinder


The surface underneath the Phoenix lander, taken minutes after landing.


Cryoturbation polygons due to the Martian permafrost.


A labeled look at NASA's Mars Phoenix Lander.

2 comments:

Anonymous said...

Hi,

I appreciate your efforts to update
us on the latest from space .. very nice !

Mrigank said...

Yes! Thank a lot for the compliment!
Isn't it a nice idea if people just left their names with the comment as well...
At least I'd know who likes what.. :-)