The Elusive Planet Mercury Spotted at its ‘Greatest Elongation’ from the Sun
See Venus and the first-quarter moon, as well! Mercury, Venus and the first-quarter moon — along with the stars Spica and Arcturus — will appear to form a straight line in the evening sky on Sept. 13, 2021. This sky map shows the view from New York City at approximately 7 p.m. local time. Credit: SkySafari app Mercury...