European Space Agency, ESA

The first in the Copernicus series, Sentinel-1, carries an advanced radar instrument to provide an all-weather, day-and-night supply of imagery of Earth's surface.

ESA astronaut Tim Peake's Principia mission to the International Space Station, from 15 December 2015 to 5 June 2016.

Establishing if life ever existed on Mars is one of the outstanding scientific questions of our time. To address this important goal, the ESA has established the ExoMars programme to investigate the Martian environment and to demonstrate new technologies paving the way for a future Mars sample return mission in the 2020's.

More about ExoMars: http://exploration.esa.int/mars/

Rosetta is making the most detailed study of a comet ever attempted. It is following Comet 67P on its journey through the inner Solar System, measuring the increase in activity as the icy surface is warmed up by the Sun. Philae, a small lander, was released onto the surface in November 2014.

Messages for ESA astronaut Tim Peake in support of his Principia mission to the International Space Station.