Worldwide New Year's Eve celebrations mark start of 2013
Millions of people around have already began celebrating the New Year, with stunning fireworks displays lighting the skies from Sydney to Shanghai. Read more
There's a Christmas conjunction this year: The Moon and Jupiter will form a tight pairing on Christmas night, right near the Hyades star cluster and the bright star Aldebaran.
Thousands have gathered at Stonehenge in the UK to mark the winter solstice and key Mayan sites in Central America to mark the end of the Mayan calendar. Read more
The Moon and Jupiter are converging for a heavenly sky show on Christmas 2012. Got a telescope? Something extra-special is happening on Jupiter that makes it an appealing target for backyard optics.