Cloud clue in space blast mystery (BBC) {Tunguska event}

[eppur_se_muova]

There is new evidence in the debate regarding the 1908 Tunguska event that destroyed 80 million trees in Siberia.

Researchers say that clouds that form at the poles after shuttle launches are due to the turbulent transport of water from shuttle exhaust.

Similar clouds were visible at night long after the Tunguska event.

The Geophysical Research Letters study suggests that an icy comet, rather than a meteor, must have been responsible for the event.

The Tunguska event has generated much debate, but 100 years on it remains unclear if it was caused by a comet, an asteroid, or a meteor. What is known is that after the event, bright skies at night were noted in a number of places, particularly Britain.
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more: http://news.bbc.co.uk/2/hi/science/nature/8119097.stm

[bbinacan]

1. Interesting.

Thanks.

[rasputin1952]

2. I have always wondered just what it was that blew up over

Siberia back then. Apparently, we're getting closer to an answer...:hi:

[PetrusMonsFormicarum]

3. perhaps a miniature black hole

struck and passed through the earth? At least I hope it passed through. Otherwise . . .

[Orrex]

4. Maybe it was created by CERN in 2011, and it jumped backwards in time?

I blame Spock.