Latest News Wires NASA Grail probes circling the moon on New Year's Day

After a 3½-month journey, a NASA spacecraft flew over the moon's south pole, fired its engine and dropped into orbit in the first of two back-to-back arrivals over the New Year's weekend.

Jet Propulsion Laboratory/NASA/AP

As planet Earth rang in the New Year, a different kind of countdown was happening at the moon.