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Waning Moon crossing Gemini, Aug. 5-6, 2021

This Week's Sky At a Glance

This Week's Sky at a Glance, July 30 – August 7

Saturn is at opposition this week, and Jupiter is soon to follow. Will your scope show the Seeliger effect of Saturn's opposition rings? Venus continues to haunt the low west in twilight. And in the south, Sagittarius starts nudging Scorpius aside.

Doubles map east

Explore the Night with Bob King

Dazzling Double Stars for Compromised Skies

For many, smoke from wildfires has transformed summer nights, blotting out stars and familiar deep-sky sights. But through it all double stars keep on shining.

Celestial News & Events

This Week's Sky at a Glance, July 23 – 31

Saturn and Jupiter shine in the southeast by late evening. The bright Moon passes them on the 24th through 26th. Venus continues to sit patiently, changelessly, low in the west in twilight. Bootes and the Big Dipper mark the western sky after dark; the Summer Triangle emblazons the east.

Venus, Regulus, Mars low in twilight, July 21, 2021

This Week's Sky At a Glance

This Week's Sky at a Glance, July 16 – 24

Venus shines in the western twilight as Mars sinks away. Jupiter and Saturn rise in late dusk. And after dark, Scorpius shows off at its very best in the south.

The crescent Moon passes Venus and Mars in conjunction, July 11-12, 2021

Celestial News & Events

This Week's Sky at a Glance, July 9 – 17

Bright Venus and tiny Mars come to conjunction low in the western twilight, as the crescent Moon stands watch. On the other side of the sky, Saturn and Jupiter rise after dark. And before moonlight comes back, delve the deep sky in Scorpius and Sagittarius.

Moon between Pleiades and Aldebaran, dawn July 6, 2021

Celestial News & Events

This Week's Sky at a Glance, July 2 – 10

Bright Venus and faint little Mars close in on each other low in the western twilight. Scorpius, laden with interesting stars and deep-sky targets, is highest in the south right after dark. Sagittarius, even richer, follows behind. Saturn and Jupiter rise in late evening.

blue noctilucent clouds hover over trees and a pink sunset

Celestial News & Events

Noctilucent Cloud Show, a Mercurial Nova, and More

Summer only lasts so long. Like everything, it's transient. That will be our theme as we explore wispy noctilucent clouds, a nova that can't sit still, and a supernova in NGC 5427 in Virgo.

Venus and Mars in the west at dusk, late June 2021

Celestial News & Events

This Week's Sky at a Glance, June 25 – July 3

Showy Venus and shy little Mars draw closer together in the western dusk. In the east, the Summer Triangle holds sway after dark with the Milky Way behind it.

Venus and Mars in the western twilight, June 21, 2021

Celestial News & Events

This Week's Sky at a Glance, June 18 – 26

Summer begins. The Honey Moon poses with Spica, Scorpius, and the Teapot as it waxes from gibbous through full this week. Venus lines up, briefly, with Castor and Pollux

M56 globular

Night Sky Sights

Summer Nights Offer Splendid Sights in Lyra

Lyra, the Lyre, offers a wonderful assortment of double stars and deep-sky objects to keep you up at night. Break out your binoculars and telescope and join me for a summertime ramble.

Red nova

Celestial News & Events

Bright Nova in Hercules on a Roller Coaster Ride

A new bright nova discovered in Hercules at 8th magnitude briefly rose to naked-eye visibility. It's currently easily visible in a pair of binoculars.

Celestial News & Events

Chasing the Sun at 39,000 Feet

Sky & Telescope's annular-eclipse flight chased down the "ring of fire" eclipse in the skies above Canada for breathtaking views.

Moon, Mars, Venus in twilight, June 11-12, 2021

This Week's Sky At a Glance

This Week's Sky at a Glance, June 11 – 19

The crescent Moon passes Venus, Pollux, Castor, and Mars in the evening twilight. The Big Dipper hangs down; the Little Dipper floats up. And greet the "Betelgeuse of summer."

Annular eclipse

Celestial News & Events

A Sunrise Annular Solar Eclipse

Even if you're not in the path of annularity during the June 10th solar eclipse, get ready for a sunrise spectacle.

Mars, Pollux, Castor in twilight, early June 2021

This Week's Sky At a Glance

This Week's Sky at a Glance, June 4 – 12

Pollux and Castor slide down past Mars in the west, while Venus, shining brightly below, tries to hog attention. On the other side of the sky, the enormous arch of the Milky Way hoves into view after dark behind the Summer Triangle.

Venus-Mercury conjunction at dusk, May 28, 2021

Celestial News & Events

This Week's Sky at a Glance, May 28 – June 5

Venus and Mercury conjoin in the post-sunset afterglow as Mercury fades away; bring binoculars! Arcturus stands over Spica. The Scorpion rears up, and the Big Dipper floats on high.

Celestial News & Events

Dawn Delight: Catch the Total Lunar Eclipse on May 26th

On May 26th the Moon will be in total eclipse for the first time in nearly two and a half years. While timing favors western North America, a partial eclipse will be visible across much of the U.S. and Canada at dawn.

Jupiter on May 17, 2021

Celestial News & Events

This Week's Sky at a Glance, May 21 – 29

The Moon waxes from gibbous to supermoon-eclipse full. Low at dusk, Venus and Mercury close in on each other. Nova Cas has dropped back. And at dawn, Jupiter and Saturn climb a bit into slightly better view.

Moon passing Mars in Gemini, May 15-16, 2021

Celestial News & Events

This Week's Sky at a Glance, May 14 – 22

The crescent Moon waxes across the evening sky, pairing with Mars in upright-standing Gemini and then, four days later, with Leo's forefoot Regulus. In a telescope, Jupiter and Saturn are becoming not quite so fuzzy as they gain more altitude in early dawn.

V1405 Cas scene

Celestial News & Events

Nova in Cassiopeia Brightens Suddenly

A star in the constellation Cassiopeia that flared into view during mid-March has erupted to naked-eye visibility. Catch it while you can!

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