Back on April 22, residents of California and Nevada had their day
interrupted by a series of sonic booms and a huge daytime fireball in
the sky, products of an incoming minivan sized asteroid that came
slamming into the atmosphere, breaking up on its way to the ground. The
fireball ended its descent in the Sierra Nevada mountains, where some
chunks of the asteroid have been recovered. But a joint SETI/NASA team
thinks there’s more asteroid to be found, and it has chartered a
zeppelin to help them scour the ground from above.
The zeppelin, from Mountain View based Airship Ventures, is allowing
the researchers to hunt for asteroid fragments with a powerful optics
system that allows them to zoom in on places of interest and evaluate
potential fragments. If it appears there’s something worth inspecting up
close, they can radio to teams on the ground that can then go in for a
closer look.
It’s the first time a zeppelin has been used to search for asteroid
fragments, and so far it’s working fairly well. The team has identified
about a dozen sites that need to be inspected, but have actually reached
only two of them with ground teams thus far. At this point, the clock
is ticking; the longer the fragments are on the ground and exposed to
the elements, the more their chemical compositions the aspect that
interests the researchers most will degrade.
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