June 10, 2021: From Eastern Canada to Eastern Russia, the moon incompletely blocks the sun. A ring of sunlight is visible around the new moon, making an annular or ring eclipse. From New England, a partial eclipse is visible as the sun rises. The maximum eclipse visible from US locations is less than 80%.
Early June Evenings, 2021: Arcturus, with the constellation Boötes, is high in the south as evening twilight ends. The constellation seems to follow or chase the Big Bear westward. Most people recognize the body and tail of the Bear as the Big Dipper.
2021, June: With a crescent moon in the eastern sky, bright Jupiter and Saturn are in the southern sky. Saturn is retrograding in Capricornus, while Jupiter begins to slow its eastward progress in Aquarius.
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.
June 3 – June 8, 2021: Each morning before sunrise, look eastward for the waning crescent moon. Each morning the moon is farther eastward and lower in the sky, while the phase wanes to a thin crescent.
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.
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.
May 30, 2021 – June 2, 2021: The gibbous moon passes bright Jupiter and Saturn before sunrise each morning. May 30, the moon is the lower right of Saturn. May 31, the moon is to the lower left of Saturn. On June 1 and June 2, the lunar orb is near Jupiter.
May 29, 2021: Three planets are in the evening sky. Brilliant Venus is low in the west-northwest after sunset. Speedy Mercury is leaving the sky after its best evening performance of the year. It is below Venus. Mars is higher in the western sky, in Gemini to the lower left of Pollux.
May 29, 2021: This morning’s bright moon is near the handle of the Teapot of Sagittarius. Bright Jupiter and Saturn are to the east of the gibbous moon.