UK astronaut Tim Peake is back on Earth after a historic six-month stay on the International Space Station.

NASA's Mars Reconnaissance Orbiter (MRO) begins its visit to the red planet 10 years ago this week.Since then, the MRO completes about 45,000 trips around Mars, taking more than 200,000 images of it and other objects in the vicinity, according to NASA.

The Cassini probe is all set to make a daring close flyby of Enceladus, an ice-rich moon of Saturn.