comet ISON

The day of reckoning has finally arrived for Comet ISON, as it slingshots around the sun and we find out whether it survives roasting. Comet ISON today reaches its closest point of approach to the sun, its “perihelion,” at around 1:44 pm EST (18:44 GMT) today. The frozen snowball from the solar system’s outer reaches...

Comets dominate the pre-dawn skies and their flybys of neighboring planets offer observing challenges for early bird sky-gazers.  Comet ISON Brightens. Late last week Comet ISON began to wake up and now shines ten times brighter than it did just a week earlier. At magnitude 5.5 it has finally reached naked-eye levels from dark locations, according...

Mars and Regulus. Looking high east at dawn on Wednesday, October 16, check out Mars as it pairs up with Regulus, the lead star of the constellation Leo the lion.  The contrast in color between the orange-hued planet and the sparkling white, 79-light-year distant star is particularly striking with the naked eye or binoculars. What...

  The latest observations from professional and amateur astronomers around the world show that the much-hyped comet ISON is still very much alive, and new data suggests that it may very well survive its close swing by the Sun on November 28. The big question on skywatchers’ minds, however, is how good of a sky...

  The latest observations from professional and amateur astronomers around the world show that the much-hyped comet ISON is still very much alive, and new data suggests that it may very well survive its close swing by the Sun on November 28. The big question on skywatchers’ minds, however, is how good of a sky...

No worries… yet. Despite the U.S. government shutdown and cancellation of most of NASA’s activities, the space agency’s fleet of planetary spacecraft will remain on the job, including its Mars rovers and orbiters. (Read: “NASA Hit by Government Shutdown.”) That’s good news for the armada of robots recording  data streaming in from comet ISON as it...

No worries… yet. Despite the U.S. government shutdown and cancellation of most of NASA’s activities, the space agency’s fleet of planetary spacecraft will remain on the job, including its Mars rovers and orbiters. (Read: “NASA Hit by Government Shutdown.”) That’s good news for the armada of robots recording  data streaming in from comet ISON as it...