Ebb and Flow chased each other around the moon for nearly a year, peering into the interior. With dwindling fuel supplies, the twin NASA spacecraft are ready for a dramatic finish.
On Monday, they will plunge — seconds apart — into a mountain near the moon’s north pole. It’s a carefully choreographed ending so that they don’t end up crashing into the Apollo landing sites or any other place on the moon with special importance.
Skywatchers on Earth won’t be able to view the double impacts since they will occur in the dark. . .