NASA will provide live video of the event, as well as a live chat with Bill Cooke, head of NASA's Meteoroid Environment Office.
Google's home page features a celebration of Edmond Halley, of Halley's Comet fame.
Potential "comet of the century" will be visiting the sun for Thanksgiving Day. There's one last chance to catch this week before it fizzles or makes history.
The European spacecraft has been hunting down one particular comet at high speeds for several years. Now, after a long nap, its target is within sight.
The European spacecraft finally sent a signal home after 31 months of hibernation. Now it prepares to meet up and ride along with a comet later this year.
The European Space Agency's solar-powered Rosetta craft will "wake up" after napping for two and a half years and begin the final part of its unprecedented journey to rendezvous with a comet.
The potential comet of the century grazed the sun last week, and it now appears it didn't survive to put on a once-in-a-lifetime Christmas show for us.
The sun-grazing comet spent Thanksgiving visiting our neighborhood star, and seems to have emerged from its shadow to tell the tale.
NASA releases a short movie showing comet ISON's approach near the fiery grasp of the sun over the course of five days.
Already visible from Earth with binoculars, ISON will get up close and personal with the sun on Thanksgiving Day.