21 December 2008


Science is amazing

Okay, so here's a movie (via Bad Astronomer) of Jupiter's moon Ganymede passing behind the giant planet. Pretty darn amazing and cool:

Now here's the really amazing part. The movie was assembled from a series of images taken not from a probe sent to Jupiter from Earth. Nope, they were taken by the Hubble Space Telescope, in low orbit around our own planet. These pictures were taken, over the course of two hours in April 2007, from here, something like 600 million kilometres away from the subjects. The light from Ganymede and Jupiter took almost an hour to reach the Hubble camera.

Talk about your telephoto lens.

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