Judging by the artefacts in the video, I'd say this is actually a series of photo's morphed together. Very cool and all, but probably based on only a dozen photos.
Great picture, mediocre article... "... erupted in a pyroclastic flow..." clearly the author doesn't know what that means... the plume isn't a pyroclastic flow, those are flowing down the mountainside.
[+] [-] Luc|16 years ago|reply
EDIT: 29 frames in fact. Here's another version with less morphy processing done on it: http://science4grownups.com/archives/2009/06/26/news/iss-ast...
[+] [-] DanielBMarkham|16 years ago|reply
I mean I still would have clicked on the link. It's an awesome article.
[+] [-] Tamerlin|16 years ago|reply
[+] [-] jacquesm|16 years ago|reply
[+] [-] ars|16 years ago|reply
It changed the air pressure or temperature such that the water in the air is no longer visible.
I remember standing outside once, literally watching clouds vanish.
They would move, and when they reached some line in the air they would vanish (it looked like they were evaporating).
The vanish-line was also moving, in the same direction as the clouds, but slower.
[+] [-] access_denied|16 years ago|reply