|Our neighbourhood: Feb 15 2013|
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Our space rock neighbourhood. This is updated daily. See image to right.
And zoomed in to our immediate neighbourhood, another daily update.
A summary of the WISE asteroid inventory with a map: Most of the 1 km and bigger asteroids are known (the ones big enough to wipe out the dinosaurs). About a quarter of the over 100 m asteroids are being tracked now.
Twenty three years from now in 2036, asteroid Apophis, one of the big ones, has a slight chance of whacking us.
An earth map of meteorite strikes in recent history where the fragments or the crater were preserved:
A zoomable link from the Guardian.
There are also about 40,000 tons of space dust falling to earth every year. That's a large swimming pool's worth every month.
And lastly, the Chinese got a video camera within two miles of tumbling Toutatis, a meteor a couple of miles across that passed a mere 4.5 million miles from our home a couple months ago. (Imperial/Metric: I generally leave the units imperial or metric as I find them.)
UPDATE: Divers recovered a 1000 lb chunk of meteor from the bottom of Lake Chebarkul and scientists have traced the meteor back to it's mother, a dark asteroid that's still out there but not heading for us.
UPDATE: Scientists report on the trackback and identify a 540 meter chunk out there as part of the same original meteor. This chunk(Itokawa) was sampled by a Japanese space ship and some was brought back to earth in 2010.