Photo of Comet ISON taken by the Hubble Space Telescope (Photo NASA, ESA, J.-Y. Li (Planetary Science Institute), and the Hubble Comet ISON Imaging Science Team)

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.

A comparison of the same part of the Tempel 1 comet before and after being hit by the impactor launched by the Deep Impact probe (photo NASA)

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.