September 3, 2021: Before sunrise, the crescent moon is in the eastern sky near the Gemini Twins. Three bright planets shine during evening hours.
Castor
2021: August 1 – 6: Morning Moon, Bright Stars
August 1 – 6, 2021: The morning moon wanes toward its New moon phase in the eastern sky. It passes the bright stars that are prominent in the evening sky during the winter season in the northern hemisphere. The stars have been making their first appearances in the morning sky during summer. At this hour, Procyon and bright Sirius are the last stellar duo to appear.
2021, June 23-30: Evening Star Venus, Mars
June 23 – 30, 2021: Venus is quickly catching Mars in the western sky after sun. Venus passes the Red Planet next month.
2021, June 11 – 14, Crescent Moon, Evening Planets
June 11 – 14, 2021: After the solar eclipse, the crescent moon returns to the western sky after sunset appearing with Evening Star Venus on June 11. Each evening the crescent waxes and appears higher in the sky. The crescent is near Mars on June 13.
2021, May 31: Goodbye, Mercury!
May 31, 2021: The planet parade is cut to four bright participants as Mercury departs the evening sky after tonight’s final appearance. “Goodbye, Mercury!” until it appears in the morning sky during early summer. This morning the moon is near Saturn and Jupiter in the southeastern sky. Brilliant Evening Star Venus, dim Mercury, and Mars are in the evening sky.
2021, May 30: Evening Star Venus, Mercury, Mars
May 30, 2021: Brilliant Evening Star shines from low in the west-northwest after sunset. Through a binocular locate Mercury, 2.5° to the lower right of Venus. Mercury is quickly departing the evening sky. Mars is higher in the sky, 5.3° to the lower left of Pollux.
2021, May 26: Approaching Venus – Mercury Conjunction
May 26, 2021: Evening Star Venus, Mercury, and Mars are in the western sky after sunset. The Venus – Mercury conjunction is two nights away. Use a binocular to see the brilliant planet and dimmer Mercury. Mars continues its march through Gemini to the lower left of Castor.
2021, May 25: Evening Star Venus, Mercury, Mars
May 25, 2021: Evening Star Venus, Mercury, and Mars are in the western sky after sunset. Mercury is coming off its best evening appearance of the year. Mars is marching eastward in Gemini. The bright moon is in the southeast during the early evening near the star Graffias.
2021, May 28: Close Venus – Mercury Conjunction
May 28, 2021: This evening Mercury passes brilliant Venus for the second of three conjunctions during this evening apparition of the second planet from the sun. Use a binocular about 45 minutes after sunset to see the speedy planet 0.4° to the lower left of Venus. This is the closest visible conjunction until 2033.
2021, May 23: Planet Parade Marches On
May 23, 2021: Five bright planets parade across the sky. Jupiter and Saturn are visible before sunrise in the southeastern sky. The star Fomalhaut is becoming visible below bright Jupiter and near the horizon. After sundown, Evening Star Venus, Mercury, and Mars are in the western sky. The bright moon is in the southeastern sky during the nighttime hours.