crescent moon

All this week we’re viewing crescent moons that grow fatter each evening. The crescent may be the Moon’s most fascinating phase.

The moon now has its strangest appearance. Several nights this week the moon will be in a lunar phase, the only one whose shape is not universally known. Everyone can identify a crescent or half or the full moon. But now we have a gibbous moon. That's the phase fatter than half but smaller than full.

This week on Strange Universe, Bob Berman discusses a triangle in the sky with two stars and the Crescent Moon.