MTPR

moon

'Field Notes:' How 'Moon Dogs' Are Made

Dec 3, 2017
A lunar halo, or moon dog. Ruka, Finland
Timo Newton-Syms (CC-BY-SA-2)

Moon dogs have many names: lunar halos, moon rings, or winter rings. Their scientific name is “paraselenae” and they are made visible by a combination of specific circumstances.

the Post Office has issued a commemorative stamp for 2017's upcoming historic solar eclipse.
U.S. Postal Service

There’s an event coming your way that’s so significant, the Post Office has issued a commemorative stamp for it: On Monday, August 21, 2017, a historic solar eclipse will occur.

The path of 100 percent totality, spanning parts of 14 states, will extend in an arc across the United States from south of Portland, Oregon, in the west to mid-South Carolina in the east.