NASA: Cidades à noite / NASA Cities at night

Astronautas a bordo da International Space Station ISS obtiveram uma espetacular visão das cidades da Terra com luzes acesas, à noite.

Mas a velocidade relativa da ISS fazia com que as fotos noturnas aparecessem borradas.

No final de 2002 e começo de 2003, o astronauta Don Pettit, integrante da Expedição 6, construiu um equipamento chamado "rastreador de porta de barracão", usando peças de reserva em torno da ISS.

Isto move a câmera para compensar o movimento da ISS em relação à Terra abaixo, resultando em imagens mais nítidas. Na foto, Londres à noite.

Mais imagens e informações, visite:

http://www.telegraph.co.uk/science/picture-galleries/5973258/Cities-at-night-from-space-photographed-by-NASA-astronauts-on-the-International-Space-Station.html?image=3

Astronauts aboard the International Space Station are treated to a spectacular view of cities on Earth lit up at night. But the relative speed of the space station meant any photos taken at night were blurred.

In late 2002 and early 2003, however, astronaut Don Pettit, part of Expedition 6, constructed a device called a barn-door tracker using spare parts from around the space station.

This moves the camera to compensate for the movement of the Space Station relative to the Earth below, resulting in clearer images.

Image: London at night

More at: http://www.telegraph.co.uk/science/picture-galleries/5973258/Cities-at-night-from-space-photographed-by-NASA-astronauts-on-the-International-Space-Station.html?image=3