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May’s night Sky Guide (May 2022)

Here is a list of planetary events to look for in May. All times and positions are listed in Eastern Daylight Time, 40° north of the equator.

May’s night sky will be filled with exciting things to see including Venus and Jupiter shining brightly together. There’s a total lunary eclipse mid-month and a possible new meteor shower toward the end of the month!

Bookmark this page so you can easily refer to it over the next few weeks. And if you’re interested in locating particular planets in the sky throughout the year, be sure to consult our visible planets guide. Also click on any of the links below to learn more!

May 1 — Venus, Jupiter, And Mercury

At dawn, Venus and Jupiter mimic a dazzling “double planet” low in the eastern sky. A half hour before sunrise, they will be about 12° above the eastern horizon. In the mornings that follow, Jupiter will pull away from Venus, ascending toward the west and by month’s end the big planet will be coming up at about two thirty in the morning. (Venus, meanwhile, will continue to rise as dawn breaks, all the way through August.)

Venus and Jupiter dazzle together in the sky as a “double planet” on May 1.

In the evening, a few minutes after twilight ends, look west-northwest for Mercury. It is easily found at about 12° to the lower right of an orange star, Aldebaran (in the constellation of Taurus). Binoculars or a wide-field telescope will reveal the pretty sight of the Pleiades star cluster, which is centered about 2° to the right of Mercury.

May 2 — Venus, Jupiter, Mercury, And Crescent Moon

In the evening, the slender sliver of the two-day old waxing Moon (4% illuminated) will join the array (see above), sitting 4° to Mercury’s upper left. Telescopically, the planet appears about one-fourth illuminated and in the days that follow, as its crescent phase thins, Mercury appears to fade away.

May 6 — Eta Aquaria Meteors

The swift Eta Aquarid meteors, which seem to radiate from the water jar of Aquarius, are predicted to reach their peak this morning. They are usually most visible to Southern Hemisphere observers, where rates can exceed 40 per hour. But hourly rates vary strongly with latitude. Observers in the tropics may see 20 meteors per hour under ideal conditions, while at more northerly latitudes the rates could be half that or less. Its meteors are swift and often leave a long-lasting train. Concentrate on that area of the sky toward east after 3 a.m. The Eta Aquarids, like the Orionids in October, are believed to be associated with Halley’s comet. 

Meteors appear to spill from the “water jar” constellation Aquarius on May 6.

May 8 — First quarter Moon at 8:21 p.m.

May 9 — Regulus Star (in Leo)

The Moon will pass several degrees above the blue star Regulus, which marks the heart of Leo (the lion).

Use this map as a guide to locate Regulus (in Leo) and Spica (in Virgo) near the Moon, May 9-13.

May 13 — Spica Star (in Virgo)

The Moon will be several degrees above the blue star Spica, the brightest star in the constellation Virgo (the virgin).

May 15-16 — Total Lunar Eclipse, Beginning at 11:29 p.m. (Eastern)

Across the Eastern US, the eclipse will begin during the late evening hours of Sunday, the 15th, while in the Western US, the eclipse will have already begun as the Moon rises. Totality will last 85 minutes. During the total eclipse, the Moon turns bright red — a reflection of Earth’s sunrises and sunsets!

The Moon turns bright red during a total lunar eclipse—a reflection of Earth‘s sunrises and sunsets all at once!

May 16 – Supermoon Full Flower Moon at 12:14 a.m.

The Full Flower Moon will pass completely into the Earth’s shadow, causing a total lunar eclipse. (This only happens approximately every two and half years.) This full Moon is known as a “supermoon” because it comes the closest to the Earth in its orbit—otherwise known as “perigee.”

May 18 – Mars with Neptune (rare sighting)

Mars rises about 30 minutes before the first light of dawn in May, as it has done every morning since the beginning of 2022. Mars has doubled in brightness since then, however, and has traveled eastward all the way from Ophiuchus through Sagittarius and Capricornus into Aquarius. But the red planet still isn’t much to look at in a telescope. It’s a gibbous ball that even in moderately large telescopes appears as nothing more than an orange speck.

On this morning, the red planet will be passing less than 1° south of Neptune, providing a good opportunity to identify the most distant of the solar system’s eight planets. With large binoculars or a telescope, Neptune will appear as a tiny bluish “star” only about 1/700 as bright as Mars.

Neptune will be visible in the morning sky on May 18. The planet is named after the Roman god of the sea pictured above.

May 22 – Saturn, Mercury, And Last Quarter Moon at 2:43 p.m.

Look southeast before dawn to see Saturn, a bright yellow-white star, shining about 5° above the moon. Also, today, Mercury passes through inferior conjunction between the sun and Earth and enters the morning sky. 

May 25 – Jupiter And Mars With The Moon

The Moon will sit about 5° to the lower left of Jupiter, and Jupiter in turn will be about 2° to the left (east) of Mars. Optimal viewing is 45 minutes to one hour before sunrise when they will be stretched low above the east-southeast horizon. 

May 27 – Venus Kissing The Crescent Moon

The crescent Moon will be 3½° to the lower left of Venus this morning.

Venus will appear to “kiss” the crescent Moon on May 27.

May 29 – Mars conjunct Jupiter

This morning, Mars and Jupiter are in conjunction with Mars passing less than 1° below Jupiter.

May 30 – New Moon At 7:30 a.m. And Rare Meteor Shower!

Late tonight, skywatchers will be on alert for a possible new meteor shower, as the Earth passes through debris that was shed by the tiny comet Schwassmann-Wachmann-3. In 1995, astronomers were surprised to see the nucleus of this comet break up into four separate pieces, releasing a cloud of dusty material into space. The amount of dusty material the Earth may encounter is unknown. If there is a thick concentration, however, we may be treated to brief meteor outburst, resulting in many dozens, if not possibly even hundreds of “shooting stars” during the course of an hour’s watch. The time to look is 10 p.m. PDT in the Western US, or in the Eastern US, 1 a.m. EDT on May 31st. More details can be found on page 104 of the 2022 Farmers’ Almanac.

Debris from Haley’s Comet will possibly fly through Earth‘s atmosphere on Memorial Day! Be on the look out!

Our schedule is adapted from “Skylog,” a regular feature appearing in Natural History magazine written by Mr. Rao since 1995.

Footnote: We use degrees to define the angular separation of two celestial objects, such as the Moon and a planet. It’s possible for you to estimate these distances by using your hand. For instance, your fist—held at arm’s length—approximately measures 10° of space.

Distances in outer space are easier to grasp with our handy chart!

We also mention magnitudes, which refer to the luminescence of an object. The lower the number, the more dazzling it is. Bright stars are 1 or 0 magnitude. Fainter ones are 5 or 6.Super bright stars are in negative numbers. For instance, Sirius is -1.4. (For reference, the full Moon is -12.7 and the Sun is -26.7.)

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