Comet ISON is approaching the Sun and astronomers have already guarantee that the show will be amazing. In fact, thanks to its size and an orbit that will bring it very close to the Sun, in November 2013 it could be as bright as the full Moon. On April 10, the Hubble Space Telescope took some amazing new photos of this comet, which is already active despite being just slightly closer to the Sun than Jupiter.
On Christmas Day of 2010, NASA’s orbital observatory Swift detected a gamma-ray burst which lasted at least half an hour and was formally labeled as GRB 101225A. There are two theories about its origin: a merger of a neutron star and a red giant and a comet colliding with a neutron star.
NASA’s Spitzer Space Telescope allowed scientists to study the Eta Corvi star system finding signs of a comet rain that hit a rocky planet.
In July 2005 the Deep Impact probe made the first visit to the comet Tempel 1, in recent days the Stardust spacecraft has taken new photos, including the ones of the crater left by the impactor launched from Deep Impact, and made new measurements to improve our knowledge.