Wednesday, October 23, 2013

Japan: a space cannon to explore the basement of an asteroid - Le Parisien

The Japan Aerospace Exploration Agency (JAXA) said Wednesday it has successfully tested a kind of space gun to bring valuable samples from the basement of an asteroid.
JAXA said that this tool, a combination of bomb and gun, equip the probe Hayabusa-2 must leave Earth next year to collect items beneath the surface of the asteroid “1999JU3″ in 2018 and bring if all goes well on our planet in 2020.

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During this test done outside the agency used a propellant to ship a large metal ball on a target, the same way it plans to do in the area in five years.
When it reaches the desired orbit of the small asteroid, Hayabusa-2 will drop this “space cannon” then put away on the other side of the asteroid. The machine will explode and propel a metal ball on the asteroid, to dig a crater. This done, the probe will land on top of the hole and take samples in the basement.
JAXA scientists believe that the basement of the asteroid is more interesting to analyze its surface, the materials are damaged by continuous exposure to cosmic rays.
Hayabusa-2 follows the first name, launched in May 2003 and had collected samples from the asteroid Itokawa to 290 million kilometers from Earth in September 2005. The technique, however, was different: a horn was collected by the projected impact of a ball on the surface of the asteroid dust probe with only three balls
?.But difficulties with telecommunications probe damage with motors, batteries and other equipment were then forced technicians to push his three-year return trip turning into a real odyssey.
The probe was finally returned in June 2010 in the Earth’s atmosphere and had, before its disintegration, could return to Earth a capsule finally recovered in the Australian desert seven years after his departure. A few months later, the program announced with emotion the presence of asteroid 1500 particles in the samples reported on our planet, a world first.
According to JAXA, the understanding of materials celestial bodies could better explain the conditions of formation of the Earth and the emergence of life.
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