Magnetic Levitation: Scientists have managed to create the sensation of weightlessness in a laboratory on Earth. Space Walk: Two astronauts take a 4-hour walk outside of the International Space Station while clear picture are beamed back to Earth. Mars Water: Scientists have discovered a huge sheet of frozen ice just under the surface of Mars that tells us about the climate of the past on the red planet. Space Detectives: We head to London for an exhibition featuring the Cassini Satellite that is still gathering information about Saturn. Netherlands Space: We look at the European Satellite names SMART-1 and launched in 2003. Mercury: A look at the Messenger Satellite that is traveling 4.9 billion miles to Mercury, the planet closest to the sun. Huygens: A new satellite was launched last December to explore the moon of Titan which orbits Saturn. Saturn Probe: A look at the Cassini Satellite as it perilously passed through Saturn's rings and spent four years orbiting the planet. Genesis Aftermath: NASA tries to salvage some vital samples from a Genesis Satellite that crashed landed and caused minor panic. Endeavour: We look at the huge effort required to get this satellite into orbit and gather the information for eager scientists waiting back home.