Nasa facts

Gwebster

Description

NASA Facts National Aeronautics and Space Administration Jet Propulsion Laboratory California Institute of Technology Pasadena, CA 91109 Mars Exploration Rover In April 2004, two mobile robots named Spirit As Opportunity’s primary mission ran out and an and Opportunity successfully completed their primary extended mission began, the rover was headed for three-month missions on opposite sides of Mars and thicker layers of exposed bedrock that might bear evi- went into bonus overtime work. These twin vehicles dence about how long or how often water covered the of NASA’s Mars Exploration Rover project continued region. their pursuit of Spirit, during geological clues its primary mis- about whether sion, explored a parts of Mars for- plain strewn with merly had envi- volcanic rocks ronments wet and pocked with enough to be hos- impact craters. It pitable to life. found indications Opportunity that small hit the jackpot amounts of water early. It landed may have gotten close to a thin into cracks in the outcrop of rocks. rocks and may Within two also have affect- months, its versa- ed some of the tile science instru- rocks’ surfaces. ments found evi- This did not indi- dence in those cate a particularly rocks that a body favorable past of salty water environment for deep enough to life. splash in once Spirit’s flowed gently extended mission over the area. Shadow of rover Opportunity in “Endurance Crater,” July 26, 2004.

Sujets

• Sciences et techniques

Informations

• Publié par: julien23
• Nombre de lectures: 174
• Langue: Français
• Poids de l'ouvrage: 1 Mo

Extrait

In April 2004, two mobile robots named Spirit

and Opportunity successfully completed their primary

three-month missions on opposite sides of Mars and

went into bonus overtime work. These twin vehicles

of NASA’s Mars Exploration Rover project continued

their pursuit of

geological clues

about whether

parts of Mars for-

merly had envi-

ronments

wet

enough to be hos-

pitable to life.

Opportunity

hit the jackpot

early. It landed

close to a thin

outcrop of rocks.

Within two

months, its versa-

tile science instru-

ments found evi-

dence in those

rocks that a body

of salty water

deep enough to

splash in once

flowed gently

over the area.

Preliminary inter-

pretations point to a past environment that could have

been hospitable to life and also could have preserved

fossil evidence of it, though these rovers are not

equipped to detect life or to be fossil hunters.

As Opportunity’s primary mission ran out and an

extended mission began, the rover was headed for

thicker layers of exposed bedrock that might bear evi-

dence about how long or how often water covered the

region.

Spirit, during

its primary mis-

sion, explored a

plain strewn with

volcanic rocks

and pocked with

impact craters. It

found indications

that small

amounts of water

may have gotten

into cracks in the

rocks and may

also have affect-

ed some of the

rocks’ surfaces.

This did not indi-

cate a particularly

favorable past

environment for

life.

Spirit’s

extended mission

began with the

rover starting a

long trek toward a range of hills on the horizon whose

rocks might have come from an earlier and wetter era

of the region’s past.

Mars Exploration Rover

NASA Facts

National Aeronautics and

Space Administration

Jet Propulsion Laboratory

California Institute of Technology

Pasadena, CA 91109

Shadow of rover Opportunity in “Endurance Crater,” July 26, 2004.