Jan. 2: Happy perihelion day! Earth is closest to the sun today.
Jan. 2-3: The Quadrantid meteor shower peaks.
Jan. 13: The new moon arrives at midnight EST (0400 GMT).
Jan. 21: The moon, Mars and Uranus will make a close approach in the evening sky. The trio will be above the southwest horizon after sunset.
Jan. 27: Mercury reaches its highest point in the evening sky, shining brightly at magnitude -0.7. See it just above the southwest horizon after sunset.
Jan. 28: The full moon of January, known as the Full Wolf Moon, arrives at 2:16 p.m. EST (1916 GMT).