January 14, 2021: This evening the thin lunar crescent joins Mercury and Jupiter after sunset.
by Jeffrey L. Hunt
Chicago, Illinois: Sunrise, 7:16 a.m. CST; Sunset, 4:43 p.m. CST. Check local sources for sunrise and sunset times for your location.
After sunset this evening the thin crescent moon, only 4% illuminated, joins Mercury and Jupiter in the south-southwest. The moon is over 10° in altitude. Mercury is nearly 7° to the lower right of the lunar crescent, while the speedy planet is 4.5° to the upper left of Jupiter.
A binocular helps to initially locate the crescent moon and the planets. If the sky is exceptionally clear, Saturn might be visible near the horizon, although this is a challenging observation.
Read about Mars during January.
Detailed Note: Thirty minutes after sunset, with a binocular look for Jupiter about 3° in altitude in the west-southwest. Mercury is 4.5° to the upper left of Jupiter. The young moon (1.8d, 4%) is nearly 7° to the upper left of Mercury. As the sky darkens further, Mars is over 60° in altitude in the south-southeast. This evening it passes 6.0° below γ Ari. With a binocular or through a telescope with some magnification to resolve its disk, Uranus is 3.2° to the lower left of Mars.
Read more about the planets during January.
July 27, 2021: Evening Star Venus, Mars, Saturn and Jupiter are in the evening sky. Mars is nearing its conjunction with Regulus in two evenings.
July 26, 2021: Four bright planets are in the evening sky. Mars closes in on Regulus for their conjunction in three evenings. Brilliant Evening Star Venus appears to the upper left of the impending Mars – Regulus conjunction. Saturn and Jupiter are low in the southeastern sky after sunset.
July 25, 2021: Four evenings before its conjunction with Regulus, find Mars in the western sky to the lower right of Venus. As the calendar day ends, look for the moon below bright Jupiter.
July 24, 2021: After sunset, Venus and Mars are in the western sky. A little later during evening hours, the moon is near Jupiter and Saturn in the southeast.
July 23, 2021: Four bright planets are visible during evening hours. Venus and Mars are in the western sky after sunset. A little later, the moon is near Saturn and Jupiter in the southeastern sky.