chelyabinsk

There's not much the Chelyabinsk could have hit that would cost as much as trying to stop it.

True, but meteors that burn up on entry can still cause damage -- see the Chelyabinsk meteor last year.

My impression of the Chelyabinsk meteor was that it fragmented significantly about 14-15s after first appearance.

And the object that exploded over Chelyabinsk last year was estimated at 20m in diameter.

That's approaching the speed of the Chelyabinsk meteor (67,000 km/h, or about 41,750 mph).

The 2013 Chelyabinsk meteor in Siberia was also in the petajoule range.

I think a good reference point is the Chelyabinsk meteor[0].

Not what I said - the Chelyabinsk meteor was a large ferric bolide, which isn't the kind of meteor which typically airbursts - that's reserved for less dense material.

I hope the people in Chelyabinsk have the presence of mind to get a GPS position on the hole before it freezes over and/or before the lake thaws later this year, in advance of any recovery effort.

Rama and "Hammer of the Gods" both were evoked for me during the Chelyabinsk event.

It's also ridiculous because of the quote at the beginning: " When a meteor exploded over Chelyabinsk, Russia in February, the world’s space agencies found out along with the rest of us, on Twitter and YouTube.

I think it's really cute how they update their past predictions [1] after the fact [2] to improve their apparent accuracy, but you'd think they would have the sense to stop short of having "predicted" the Chelyabinsk meteor explosion last year.

Another 40 miles to the north is Chelyabinsk-70 (Snezhinsk), a nuclear warhead design and storage complex.

It's one reason why there were so many videos of the meteorite that hit Chelyabinsk, taken while driving.

Approximately 88 kilometers (55 miles) northeast of Chebarkul Lake is Chelyabinsk-65 (Mayak), a plutonium production and fissile material storage complex.