That little Rosetta spacecraft which has been orbiting Comet 67P since 2014 is getting close to the end of its mission.

The European Space Agency launched the craft in 2004, let it "sleep" for a while as it made a 10-year rendezvous with Comet 67P/Churyumov-Gerasimenko and then sent it into orbit around the rock.

It also sent the Philae lander to the surface of the comet, but it bounced upon landing and ended up in a dark area, where the sunlight couldn't recharge its batteries.

The main Rosetta spacecraft is also solar-powered and the comet is now headed away from the sun. So, the spacecraft takes longer to recharge its batteries and ESA is figuring the end of the mission sometime this fall.

But, until then, the photos keep coming back and more research is happening. For instance, ESA reports the gas you see in this photo is mainly water-ice.

The ESA website has more photos, including some great 3-D photos (you'll need those blue-red glasses).