In about a days time Philae, the landing module of the spacecraft Rosetta, will hopefully have successfuly landed on comet 67P/Churyumov-Gerasimenko after which some interesting experiments will be conducted.

You can read more about the mission at rosetta.jpl.nasa.gov.

You can read about upcoming live coverage at rosetta.jpl.nasa.gov/news/nasa-television-provide-coverage-european-mission-comet-landing.

A couple of images:
Comet
Rosetta selfie