Several especially bright stars highlight the eastern sky on January evenings. The list includes Betelgeuse and Rigel in Orion, Pollux and Castor in Gemini, and the brightest nighttime star of all, Sirius, in the big dog.
Three planets line up to the lower right of the Moon tonight. Mars is closest to the Moon, with Venus, the “evening star,” farther along the same line. Mercury is farther still, just above the horizon, and visible mainly from the southern U.S.