New Horizons - Team Reacts to Images Beginner 07/30/2015 The Philae Lander – Chemistry on a Comet Intermediate 06/18/2015 Rosetta's Philae touchdown Intermediate 06/17/2015 Horsehead Nebula Advanced 06/08/2015 VLA radio telescope Beginner 05/04/2015 La silla telescope ring Intermediate 05/04/2015 Messier 82 Advanced 03/23/2015 Two galaxies interacting Advanced 03/23/2015 VISTA's infrared view of the Lagoon Nebula Advanced 01/08/2015 Percival Lowell observing Venus Advanced 12/12/2014