The Curiosity rover survived a perilous landing on Mars early Monday in a never-before-tried technique that saw it lowered to the surface of the Red Planet like a spider on a string, the NASA space agency said.
Cheers broke out in NASA's Jet Propulsion Laboratory in California
as the rover touched down after what had been dubbed "seven minutes
of terror," when the craft entered the planet's atmosphere and
undertook the most complicated landing yet for an unmanned craft.
Within minutes of its 0532 GMT landing, Curiosity sent its first
grainy images, showing its wheels safely on the surface. Shouts of
"It's the wheel, it's the wheel!" erupted in the control room.
Zooming toward the surface at more than 20,000 kilometres per
hour, the craft carrying the rover had decelerated using thrusters
and a parachute.
It jettisoned its cruising rockets, heat shield and outer shell -
going through six different vehicle configurations - before a
jet-pack like device known as a "sky crane" gently lowered the
900-kilogramme rover to the Martian surface like a spider on a
thread.
NASA's Odyssey orbiter circling the planet sent the first
confirmation of the landing via an antenna in Australia.
Launched in November, the 2.5 billion dollar rover programme is
part of a mission designed to determine whether conditions on Mars
were ever right for life. Its mission is also part of broader plans
to eventually send astronauts to Mars.
"Today the wheels of Curiosity have begun to blaze the path for
human footprints on Mars," NASA chief Charlie Bolden told reporters
and a room full of thrilled engineers and scientists. "Curiosity, the
most sophisticated rover ever built, is now on the surface of the Red
Planet, where it will seek to answer age-old questions about whether
life ever existed on Mars - or if the planet can sustain life in the
future."
He called the landing an "amazing" feat and noted that only 40 per
cent of craft ever sent to Mars have successfully arrived. The
complicated landing manoeuvre was being employed with a rover for the
first time, and earlier efforts with much smaller rovers always
involved an airbag-like structure.
Fans gathered around the United States, including in New York's
Times Square, to watch a live broadcast from mission control.
US President Barack Obama called the landing a historic moment
that marked a major advance in space exploration.
"The successful landing of Curiosity - the most sophisticated
roving laboratory ever to land on another planet - marks an
unprecedented feat of technology that will stand as a point of
national pride far into the future," Obama said. "It proves that even
the longest of odds are no match for our unique blend of ingenuity
and determination."
The mission is to spend at least one Martian year - nearly two
Earth years - studying the Gale crater to transition from the search
for water to the search for life by looking for other ingredients
necessary for life, such as carbon. It will study minerals on the
surface to get an idea about what conditions were like on the planet
millions of years ago.
The Gale crater, where Curiosity will focus its efforts, is nearly
154 kilometres in diameter and features a mountain that rises some 5
kilometres above the surface. The massive feature includes layers of
rock strata that will provide a virtual history of Mars' geological
past.
The rover landed in a low-lying area where water appears to have
once flowed, allowing it to get to work right away before heading
toward the mountain.
Curiosity will make use of a range of new instruments. Armed with
two cameras atop a mast, Curiosity can take 3-D and panoramic images,
and a laser can be shot into rocks to determine their chemical
elements.
A two-metre long robotic arm can be extended out from the rover to
examine its surroundings more closely, and a drill will allow it to
take samples from inside rocks.
The area has already been studied extensively from orbiting
spacecraft, and scientists hope that Curiosity will provide clues to
a probable wet Martian past. The area contains clay and sulfate-rich
areas, where organic compounds necessary to life could be found.
Curiosity builds on the work of past rovers, including
Opportunity, one of a pair of water-hunting twin rovers that
continued functioning years beyond their orginal missions.
NASA eventually hopes to send a manned mission to Mars, and
robotic missions to Earth's nearest planetary neighbour have
continued. On Thursday, India said it hopes to send an orbiter to the
planet as soon as 2013.
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News Column
NASA's Curiosity Lands Successfully on Mars
August 6, 2012
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Source: Copyright 2012 dpa Deutsche Presse-Agentur GmbH
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