August 20, 2019

AstroEvent: See Mercury at its 2011 Morning Best.

Never seen the planet Mercury before? This coming week offers a good time to try, as the inner-most world undergoes its best morning apparition for northern hemisphere viewers. The tiny world reaches a greatest elongation of 18.1° degrees west of the Sun on September 3rd at a brightness ranging from about -1 magnitude to 0.0 on the dime. [Read more...]