Planets

Imagine our universe as only one of an infinite number of possible universes - be they "Quilted", "Brane" or, most strangely of all, "Ultimate". Brian Green tackled this almost mystical idea head-on in The Hidden Reality: Parallel Universes and the Deep Laws of the Cosmos. Greene discussed his ideas further during a March 2011 edition of Start the Week.

Imagine too flying through the universe. This animated flight through the universe shows close to 400,000 galaxies, and was derived at John Hopkins University from the Sloan Digital Sky Survey.

Another video meanwhile takes viewers from the Himalayas through our atmosphere and the inky black of space to the afterglow of the Big Bang.