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Comet ATLAS (C/2019 Y4)

Explore the Night with Bob King

Comet ATLAS: Will it Become a Naked-Eye Object?

Is our bright comet drought drawing to a close? Comet ATLAS (C/2019 Y4) might become a naked-eye object some time this spring. Read on to find out when and where to look for it.

Explore the Night with Bob King

Deep-sky Observing the Easy Way

Cold weather keeping you inside at night? Limit your time outdoors and make the most of your telescope time with these easy-to-find deep-sky gems.

Gibbous Moon

Night Sky Sights

Diving Into the Moon's Bay of Rainbows

This curious lunar feature — visible the nights of March 4th and April 2nd — is a delight in small scopes or even binoculars.

Mini-moon discovered

Explore the Night with Bob King

Earth Has A Mini-Moon — But Not for Long!

Two astronomers discovered a temporary mini-moon captured by Earth — but it's about to win its freedom.

M35 in Gemini

Deep Sky

Explore the Winter Hexagon Tonight

This expansive region is home to plenty of bright stars and deep-sky wonders.

Betelgeuse telescopic view

Variable Stars

Is Betelgeuse Approaching a Crossroads?

Astronomers all over are waiting with bated breath to see what Betelgeuse will do next. Is it going to start brightening again on February 21st? Or will it continue to surprise?

Mars at the moon's edge

Celestial News & Events

Watch the Moon Occult Mars Before Sunrise on February 18th

Occultations of stars by the Moon occur routinely, but planetary lunar occultations are much rarer birds. That's why I hope you'll make the effort Tuesday morning February 18th to watch the waning crescent Moon occult the planet Mars.

Celestial Objects to Observe

Winter’s High Moon

A nearly full Moon offers plenty to see and ponder.

A bright supernova

Variable Stars

The Latest on Betelgeuse, Plus a Bright Supernova and New Comet Iwamoto

The sky provides. This winter, the fading of Betelgeuse caught us all by surprise. Now, as January wraps up, we can add a new comet discovery and a supernova bright enough to see in a 6-inch telescope to an ever-growing list of seasonal sky wonders.

Thuban in TESS image

Stellar Science

See Ancient “North Stars" Eclipse Each Other

The ancient pole star known as Thuban turns out to be an eclipsing binary. If you're up for a challenge, you can see the eclipses for yourself.

Comet PanSTARRS blooms

Celestial News & Events

Comets to Catch in 2020

Here's the lowdown on which comets will brighten our skies in 2020.

Totality on August 21, 2017

Eclipses

Solar and Lunar Eclipses in 2020

Six eclipses occur in 2020, with one total and one annular solar eclipse in the mix. But the four lunar eclipses will be disappointing brushes through the fringe of Earth's shadow.

Betelgeuse in Orion

Celestial News & Events

Betelgeuse is Dimming . . . Why?

The bright star Betelgeuse has faded to a historic low as astronomers try to figure out why.

Geminids Dec 13_2018 Bob King 480x274

Meteors

The Best Meteor Showers in 2020

Sky & Telescope predicts that the three best meteor showers — the Quadrantids (peaking on January 4th!), Perseids and Geminids — will all have strong showings this year.

Chile-Argentina eclipse path in 2020

Celestial News & Events

2020 Total Solar Eclipse: Update from Patagonia

Check out the viewing site and accommodations in Argentina's lush Lake District for Sky & Telescope's expedition to witness the 2020 total solar eclipse on December 14, 2020.

The Great Square of Pegasus

Celestial Objects to Observe

Deep-sky Dive Into the Great Square of Pegasus

We return to Pegasus, but this time with a telescope to find a grab-bag of overlooked deep-sky treasures.

Incoming point

Asteroids

"Potentially Hazardous" Asteroid Is Headed For Your Telescope

A potentially hazardous asteroid makes a flyby of Earth this Friday, offering amateurs with modest telescopes a chance to ride along.

Explore the Night with Bob King

Crack Your Crescent Moon Record

Calling all crescent lovers! Here's a chance to set a new personal record by seeing one of the oldest moons ever.

Moon

International Observe the Moon Night 2019

Observe the first-quarter Moon on October 5 for International Observe the Moon Night. Here's a guide to tell you what to look for.

Explore the Night with Bob King

Treasure Hunting in the Hall of the Deep-Sky King

Cepheus, the King, has hidden his treasure well but not so much that curious amateurs can't find more than enough to stuff their pockets.

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