Rosetta
- id: PRB-015
- launch_year: 2004
- launch_date: 2004-03-02
- operated_by: ESA
- visited: Comet 67P/Churyumov–Gerasimenko
- carried: OSIRIS
- status: completed
- confidence: believed-correct
- sources: NASA NSSDCA Master Catalog, ESA Space Science
Rosetta, an ESA mission, launched on 2 March 2004 and spent a decade looping through the solar system — including flybys of the asteroids Šteins and Lutetia and a long deep-space hibernation from which it woke in January 2014. In August 2014 it arrived at comet 67P/Churyumov–Gerasimenko and became the first spacecraft to orbit a comet.
Its OSIRIS camera system mapped the comet's strange two-lobed body in detail as it grew active approaching the Sun. On 12 November 2014 Rosetta released the small lander Philae, which made the first landing on a comet — bouncing twice before coming to rest in the shadow of a cliff, where it still returned science before its batteries drained.
Rosetta accompanied 67P around the Sun until 30 September 2016, when the mission ended with the orbiter's own slow, deliberate descent to the comet's surface.