Here's what to know about May's special full moon and when to watch. A full moon is one of the lunar phases where the entire visible side of the moon, facing Earth, is illuminated by the sun.

Here's what to know about May's special full moon and when to watch. A full moon is one of the lunar phases where the entire visible side of the moon, facing Earth, is illuminated by the sun.

Here's what to know about May's special full moon and when to watch. A full moon is one of the lunar phases where the entire visible side of the moon, facing Earth, is illuminated by the sun.

Asteroid 9 Metis reaches at opposition at 2 A.M. EDT in the constellation Libra. The 10th-magnitude main-belt world is visible with binoculars or a telescope all night from sunset to sunrise.

Abstract: X-ray phase contrast imaging (XPCI ... several different XPCI methods are practical using desktop X-ray tube, such as micro-focus PCI, grating-based differential PCI and coded aperture-based ...