December 19, 20, and 21, 2021: The bright moon leading up to the winter solstice appears in the western sky before sunrise in front of Gemini.
September 1, 2021: Before sunrise, the crescent moon is near a star cluster that is visible. In the western evening sky, Venus targets Spica before their conjunction in four evenings.
August 29, 2021: Before sunrise, the gibbous moon appears near the Pleiades star cluster.
June 1 – June 7, 2021: Evening Star Venus shines in the western sky after sunset. Mars is over 20° to the upper left of Venus during this week. Venus cuts the gap to Mars during the month. Use a binocular to watch Venus pass a star cluster and Mars move eastward in the Pollux region.
April 30, 2021: Evening Star Venus and Mercury are low in the west-northwest after sunset. Venus is beginning its evening appearance and Mercury is enroute to its best evening appearance of the year. After night falls, Mars is in the west in Gemini. Through a binocular, Mars is visible near the star cluster Messier 35.
April 23, 2021: Evening Star Venus and Mercury are entering the evening sky. They are found very low in the west-northwest after sunset. The bright moon is in the southeastern sky during the early evening. Mars is moving toward the star cluster Messier 35.
April 22, 2021: Brilliant Evening Star Venus is making its first appearance in the western sky after sunset. Look just above the horizon at 20 minutes after sunset. The bright, gibbous moon is in Leo. Mars approaches the star cluster Messier 35 in a darker sky.
April 17, 2021: During the early evening, the crescent moon is above Mars in the western sky. Use a binocular to spot the star cluster M35 near the moon. Mars is above the Bull’s horns.