US astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko has docked for the start of a 12-month tour of duty on the International Space Station

Two most audacious space missions- Solar Orbiter and Solar Probe Plus, are currently in development and will venture inside the orbit of Mercury to study the Sun

NASA's team Curiosity Rover has found nitrogen on the surface of Mars which is a significant discovery that adds to evidence the Red Planet could once have sustained life, the space agency said.

There is further, compelling evidence that Ganymede - the largest moon in the Solar System - has an ocean of water beneath its icy crust.