A photo of Comet 67P/Churyumov-Gerasimenko taken by Rosetta's camera on Aug. 3 from a distance of 177 miles.
After a 10-year journey through the solar system, the European Space Agency's Rosetta spacecraft has become the first-ever probe to rendezvous with a comet.
The craft will stay with the comet for more than a year "as they swing around the Sun and back out towards Jupiter again," the ESA said in a statement.
Instruments on the spacecraft will send back images and details of the comet's composition and temperature, providing astronomers with clues about the origins of life.
"After ten years, five months and four days traveling towards our destination, looping around the Sun five times and clocking up 6.4 billion kilometres, we are delighted to announce finally 'we are here'," ESA director Jean-Jacques Dordain said.
In November, Rosetta is set to make history again: It will deploy a small lander onto the surface of the comet.