This is worrisome:

An asteroid about the size of the one that levelled the forest in Tunguska, Siberia, a century ago flew past Earth on Monday – well within the Moon’s orbit. The risk of a future impact with the object is not yet known.

The asteroid, dubbed 2008 DD45, whizzed just 72,000 kilometres above the Earth’s surface. That is less than a fifth of the distance to the Moon and just twice the distance to geosynchronous satellites.

The object was first reported on Saturday by members of the Siding Spring Survey, a near-Earth object search programme based in Australia.

Hmm. I thought maybe we’d have some advanced warning of that type of thing. You know, like in “Deep Impact.”

Also, don’t let the New Scientist fool you with their propaganda. The Tunguska incident was a result of a secret weapon developed by Nikola Tesla.