If you havent seen Comet NEOWISE yet, time is running out. As comets get closer to the sun, some of the ice melts and gases in the comet sublimate. Its name is Rosetta, and it flew to Comet 67P, orbited it, and then deployed a lander, named Philae, onto the surface! Here are a couple of photos of Comet 67P -- one from Rosetta in orbit, and another from Philae on the surface! Comet 67P (NASA)