An image of Comet 67P/Churyumov-Gerasimenko. Our Solar System is
home to one star, nine planets and dozens of planetary
satellites. It also contains millions of asteroids and
comets – the left-over debris from the cosmic
construction site that created the planets and their
moons.

Rosetta’s task is to study these primitive building blocks
at close quarters so that scientists may gain new insights
into the events that took place 4600 million years ago,
during the birth of Earth and its planetary
neighbours.