...A blue moon - the second full moon in a calendar month (click title to entry - thank you) - occurs only every 2½ years on average. This month, full moons occur on December 2 and December 31.
An astronomer, David Reneke, from Australasian Science magazine, said it was rare for the event to land on New Year's Eve, and it would not happen again until 2028.
''While everyone's celebrating they should also take a moment and look up into the night sky,'' Mr Reneke said.
But the moon will not turn blue - if anything, Mr Reneke said it could turn red when viewed from cities because of the filter effect of smoke from fireworks....
