May 13, 2021: Venus, Mercury, the crescent moon, and Mars are in the western sky after sunset.
May 12, 2021: Thirty minutes after sunset, the razor-thin moon is 1.2° to the left of brilliant Venus. This is the closest grouping of the moon and Venus during this evening appearance of the brilliant planet. Mercury is 9.1° to the upper left of Venus. Mars maintains its eastward march in Gemini. Sirius and Aldebaran are near their heliacal settings, their final appearances in the evening sky for the year.
May 11, 2021: The planet parade continues today. Five planets are on display. Bright Jupiter and Saturn are in the southeastern sky before sunrise. After sundown, brilliant Venus, Mercury, and Mars are in the western sky. The moon is at its New phase and at apogee today.
May 10, 2021: Five planets are on display. Jupiter and Saturn are visible in the southeastern sky before sunrise. Brilliant Venus, Mercury, and Mars shine from the western sky after sunset. Only the sun disrupts a continuous view of the five worlds.
May 9, 2021: Look for five planets today. Jupiter and Saturn are visible in the southeast before sunrise. Venus, Mercury, and Mars are in the western sky after sunset.
May 7, 2021: The planets and moon parade across the sky today. Jupiter and Saturn are visible before sunrise in the southeast. The moon can be seen closer to sunrise. After sunset Venus, Mercury, and Mars are in the west-northwest.
May 6, 2021: During a 24-hour period, the five bright planets and the moon are visible. Before sunrise this morning, Saturn, Jupiter, and the crescent moon are lined up in the southeast. After sunset, brilliant Evening Star Venus is visible after sunset. As the sky darkens Mercury, then Mars, appears in the western sky.
May 5, 2021: Brilliant Venus, Mercury, and Mars are visible in the western sky after sunset. Venus is visible low in the west-northwest about 30 minutes after sunset. By 45 minutes after sundown, Mercury is visible to the brilliant planet’s upper left. Mars is easily visible and hour after the sun sets, about one-third of the way up in the west, in front of the stars of Gemini.
May 4, 2021: This morning the moon is near Jupiter and Saturn before sunrise. Look about an hour before sunup. Bright Jupiter is to the upper left of the thick lunar crescent, while Saturn is to the upper right.May 4, 2021: Three planets are visible after sunset. Brilliant Venus is low in the west-northwest after sundown. Mercury is above Venus. It is visible lower as the sky darkens. As night falls, Mars is over a third of the way up in the west, under Castor and Pollux, the Gemini Twins.
During May 2021, Mars marches across the starfields of Gemini. The planet is visible in the western sky after sunset. Early in the month, Mars is near the feet of Castor. Mars moves through the constellation diagonally from lower right to upper left. It ends the month passing Pollux.