Watch The Moon Cover Venus in a Rare Daytime Sky Event This Week : ScienceAlert

Watch The Moon Cover Venus in a Rare Daytime Sky Event This Week : ScienceAlert

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If you’re like us, you’ve been following the close conjunction of Jupiter and Venus in the June dusk sky.

Next week, the Moon enters the evening scene, and actually occults (passes in front of) the planet Venus in what promises to be one of the top skywatching events for 2026.

It’s rare to see the two brightest natural objects in the sky (after the Sun) meet up in the daytime sky.

It’s also rare to see the Moon greet Venus a good distance from the Sun. Venus never strays farther than 47 degrees from the Sun as seen from the Earth.

Sky simulation showing a thin crescent Moon near bright Venus in a blue daytime sky, with on-screen Moon data including magnitude, elongation and illumination.
The Moon approaches Venus on the 17th. (Stellarium)

This month’s occultation sees Venus 38 degrees from the Sun, just under two months from greatest eastern (dusk) elongation on August 15th.

The event occurs on the afternoon of Wednesday, June 17th, centered on 16:40 EDT (20:40 UTC).

The occultation transpires over northeastern South America under dark skies after sunset, and over the Caribbean, the contiguous United States (CONUS), northern Mexico, and southern Canada under daytime skies before sunset.

The Moon is an 11 percent illuminated, waxing crescent as it approaches Venus.

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The Moon will take 29 seconds to cover the 74 percent illuminated, 15″ disk of Venus. Venus shines at about -4th magnitude during the event.

The Moon passes New phase on June 15th, and slides 2.5 degrees north northeast of Mercury on the evening of the 16th. Mercury also reaches greatest elongation 24.5 degrees east of the Sun just one day prior.

If you’ve never seen Mercury for yourself, this coming week is a good time to try and cross the innermost world off of your skywatching life-list.

Watch The Moon Cover Venus in a Rare Daytime Occultation
The phases of the Moon for June. (NASA/JPL-Caltech)

This is actually the first of three lunar occultations of Venus for 2026. The other two occur on September 14th in Southeast Asia and on November 7th at the southern tip of South America.

Venus is the one planet that’s prominent enough to see during a daytime occultation.

Here’s a strange fact: the Moon actually has a much lower albedo than Venus, with a reflectivity of less than 14 percent, versus 70 percent for the Venusian cloud tops. Up close, the lunar surface resembles worn asphalt.

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Concentrating what little reflected light the Moon does return into a small patch of sky translates its dull gray into pearly white in the eye’s view.

But wait until dusk, and you’ll see an encore performance, as the slender waxing crescent Moon also occults the open star cluster Messier 44 (Praesepe) in the heart of the constellation Cancer.

This occurs just scant hours after the Venus event. This favors the southeastern US at dusk. Venus follows suit, transiting just north of the cluster on June 19th.

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This is one of the final favorable lunar occultations of Venus for the CONUS until 2029-2031.

Seeing Venus in the daytime requires persistence. A deep blue high-contrast sky will help.

The event will be well-suited to video capture, but beware of autofocus mode, which often stubbornly refuses to lock onto the daytime Moon. A wide-field view of the Moon paired with Venus should display the two nicely, as the planet slips behind the dark limb of the Moon.

Related: A Strange Moon Orbiting Neptune May Be The Sole Survivor of an Apocalypse

The International Occultation Timing Association (IOTA) has a list of ingress/egress times for select locations in the path, and Stellarium can help you zero in on exact times for your site.

Don’t miss the ‘Great American Occultation,’ as a great opportunity to do a little daytime sidewalk astronomy with friends.

This article was originally published by Universe Today. Read the original article.

View original source here.

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