Tornado visto desde el aire

Hola,
aqui podeis ver un tornado espectacular visto desde un helicóptero.

http://www.bbc.co.uk/news/world-asia-pacific-13593871

Messi lidera la genial exhibición de fútbol alegre y coral de los de Guardiola ante el Manchester United - El equipo azulgrana, tetracampeón de Europa

Bye Bye Comet! [HD Video]

NASA video captured May 10-11, 2011

SOHO watched as a fairly bright comet dove towards the Sun in a white streak and was not seen again after its close encounter (May 10-11, 2011). The comet, probably part of the Kreutz family of comets, was discovered by amateur astronomer Sergey Shurpakov. In this coronagraph the Sun (represented by a white circle) is blocked by the red occulting disk so that the faint structures in the Sun's corona can be discerned. Interestingly, a coronal mass ejection blasted out to the right just as the comet is approaching the Sun.

Pendulum Waves

Fifteen uncoupled simple pendulums of monotonically increasing lengths dance together to produce visual traveling waves, standing waves, beating, and random motion. One might call this kinetic art and the choreography of the dance of the pendulums is stunning! Aliasing and quantum revival can also be shown. More info here