Japan plans second asteroid sample grab

Japan will send another satellite on a mission to capture material from an asteroid and bring it back to Earth for study, scientists say. The Japan Aerospace Exploration Agency says a successor to the troubled Japanese spacecraft Hayabusa, which managed to return a capsule to Earth this year, could launch as early as 2104.
The cost of the new spacecraft is estimated at $2 billion. Like its predecessor, it will visit an asteroid to collect dust samples. But whereas Hayabusa visited the 500-yard-wide asteroid Itokawa to collect silicon- and iron-rich dust, Hayabusa 2 will visit a half-mile-sized space rock called 1999 JU3 in search of organic molecules that might have been the genesis of life on Earth.
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