Photos: Europe's Rosetta Comet Mission in Pictures

Boulders on Comet 67P/C-G

This image of the boulders on Comet 67P/C-G was taken by OSIRIS on Sep. 19, 2014, from a distance of about of 18 miles (29 km.). Image released May 18, 2015.

Boulders on Comet 67P/C-G

This image of the boulders on Comet 67P/C-G was taken by OSIRIS on Aug. 16, 2014 from a distance of 65 miles (105 km.). Image released May 18, 2015.

Comet 67P/Churyumov-Gerasimenko Jan. 31 - March 25, 2015

Activity increases substantially at Comet 67P/Churyumov-Gerasimenko between Jan. 31 and March 25, 2015, when this series of pictures was taken by the Rosetta spacecraft. [Read full story.]

Comet Jets Up Close

The Comet 67P/C-G appears to be actively spewing jets of material in this stunning image from the European Space Agency's Rosetta spacecraft on Feb. 3, 2015. [Read the Full Story.

An Active Comet

The sheer size of Comet 67P/C-G's jets can be seen in this wide view image captured by Rosetta on Feb. 6, 2015. [Read the Full Story.

Comet Jets

This image, one a series of spectacular views from Rosetta, shows major jet activity from the surface of Comet 67P/C-G. This image was taken on Jan. 31, 2015, capturing the jet from the comet's "neck" region. [Read the Full Story.

Comet 67P/Churyumov-Gerasimenko Seen by Rosetta Spacecraft

Comet 67P/Churyumov-Gerasimenko is seen here in an image captured by the Rosetta spacecraft. The mission's Philae lander hit the surface with a big bounce, demonstrating that the comet's surface is hard.

Philae's Drift Across Comet 67P

Images taken by Rosetta spacecraft show the path of Philae lander as it approached and rebounded from its first touchdown on Comet 67P/Churyumov–Gerasimenko on Nov. 12, 2014.

Philae Touchdown Site Before

This image from an animated gif taken by Rosetta spacecraft's navigation camera shows the spot where Philae lander is believed to have first touched down on Comet 67P. The image was taken 3 min., 34 sec. before the presumed touchdown.

Philae Spotted by Rosetta After First Landing

This image from an animated gif from Rosetta spacecraft's navigation camera provides evidence that Rosetta's Philae lander first touched down on Comet 67P very close to the target area. The dark area (circled) may indicate the touchdown with a cloud of dust. The likely position of Philae and its shadow are labeled. Image released Nov. 17, 2014.