Year of the Comet
Comet C/2011 L4 (PANSTARRS)

PANSTARRS information

Comet C/2012 S1 (ISON)

ISON information

The Sky This Month
January 2009

Tune into the most observable events in this month's sky.

Crescent Moon Jan. 2009
January 2009: Both Mercury and its inner-planet sibling, Venus, reach greatest elongation this month. There's no better time to view these two worlds.
By Alister Ling, Martin Ratcliffe // Published: November 24, 2008
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