[templar]

I would think that if 30 astronds hit with this sort of impact each year that a city would have disappeared by now.

I would think that the equivalent of 30 nukes a year going off in the atmosphere would be rather more noticeable than it is, wouldn't it?

[blam]

"I would think that the equivalent of 30 nukes a year going off in the atmosphere would be rather more noticeable than it is, wouldn't it?"

I actually posted a thread on one that exploded off the California coast last year.

[JoeSchem]

I would think that the equivalent of 30 nukes a year going off in the atmosphere would be rather more noticeable than it is, wouldn't it?

There was an account, back in the seventies I believe, of airline passengers near Alaska noticing a huge explosion out their windows. There were no other reports. So yes, it is amazing that such things can happen without our taking greater notice.

[lepton]

I would think that the equivalent of 30 nukes a year going off in the atmosphere would be rather more noticeable than it is, wouldn't it?

I've seen one... Over PA a few years ago.