April 26, 2021: The perigee full moon (supermoon), known as the Pink Moon, occurs this evening. Evening star Venus and Mercury are above the west-northwest horizon after sunset. Use a binocular to see Mars closest to the star cluster Messier 35.
by Jeffrey L. Hunt
Chicago, Illinois: Sunrise, 5:54 a.m. CDT; Sunset, 7:44 p.m. CDT. Check local sources for sunrise and sunset times for your location.
Venus and Mercury are low in the west-northwest after sunset. Twenty minutes after sunset, Venus is over 3° up in the sky. Bright Mercury is 1.6° to the upper right of Venus. The speedy planet is brighter than Sirius, although Mercury dims each evening. Find them with a binocular. Can you see them without optical aid?
Read more about Venus in our summary document.
The very bright moon, nearing the official full phase later this evening, is over 12° above the east-southeast horizon. It is over 13° to the lower left of Spica.
An hour after sunset, Mars is less than 40° up in the west in Gemini. The Red Planet is 2.8° to the right of Propus, “the projecting foot,” (η Gem on the chart) and 4.1° to the lower right of Tejat Posterior (μ Gem).
This evening Mars passes the star cluster Messier 35 (M35 on the chart). The planet is 0.6° to the upper right of the cluster. Use a binocular to see the planet, the cluster and the background stars. The moon’s light makes this observation challenging, as it tends to wash away the dimmer celestial sights.
The moon reaches its Full (Pink Moon) phase at 10:32 p.m. CDT. This perigee full moon is sometimes referred to as a “supermoon,” although its larger size is difficult to spot without measuring instruments. Get outside for an evening walk. The full moon provides ample light to navigate sidewalks and paths.
Here’s more about Mars during 2021.
Read about Mars during April.
Detailed Note: One hour before sunrise, the moon (14.3d, 99%) is 5.0° above Spica. The lunar orb is 9.6° up in the west-southwest. Farther eastward, Jupiter is 15.4° up in the southeast. Use a binocular to spot the starfield. The Jovian Giant is 4.2° to the left of Deneb Algiedi,1.5° to the lower left of μ Cap, and 1.9° to the upper right of ι Cap. The Jupiter – Saturn gap is 14.7°. Saturn is to the upper right of Jupiter and 1.2° to the upper right of θ Cap. Venus continues to crawl into the evening sky. Find it over 3° above the west-northwest horizon at 20 minutes after sunset. Bright Mercury (m = −1.5) is 1.6° to the upper right of Venus. Can you see them without a binocular? By an hour after sunset, Mars is less than 40° in altitude above the west horizon. The planet is in Gemini, 1.8° to the upper right of 1 Gem and 2.8° to the right of Propus. The Red Planet is also 4.1° to the lower right of Tejat Posterior (μ Gem, m = 2.8). In this bright moonlight, use a binocular to spot the star cluster M35, 0.6° to the left of Mars. Farther east, the nearly Full moon (15.0d, 100%) is over 12° above the east-southeast horizon. The lunar orb is over 13° to the lower left Spica. The moon reaches its Full phase (Pink Moon) at 10:32 p.m. CDT.
Read more about the planets during April 2021.
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.