December's moon officially reached full illumination at 4:02 a.m. EST (0902 GMT) on Dec. 15, but it will still appear relatively full for a few days around the peak.

The moon is set to make its closest apparent approach to Mars at 6:52 a.m. EDT (1052 GMT) on June 1, at which time the two worlds will be separated by a little over 1 degree in the sky, according ...