1–20 of 42 results
RS Oph animation

Celestial News & Events

Recurrent Nova RS Ophiuchi Just Blew its Top!

The recurrent nova RS Ophiuchi just went into outburst — its first burst in 15 years — and it's bright enough to see with the naked eye

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.

NGC 5453 globular cluster

Variable Stars

In Heaven with M7, a Portal Into the Deep

M7 in Scorpius is one of the brightest, most beautiful open clusters in the sky. It's also "home" to a half-dozen other delectable deep-sky sights.

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

Variable Stars

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.

Hubble photo of M3

Variable Stars

Hunting Barnard's Variable in the Globular Cluster M3

We beat a path through a forest of stars to find the first variable star ever discovered in a globular star cluster.

Three novae

Celestial Objects to Observe

A Bouquet of Novae Brightens April Nights

With the recent discovery of Nova Scorpii 2021 earlier this week, three bright stellar explosions are now visible in small telescopes from dusk till dawn.

Deep image of V1405 Cas nova

Stellar Science

Bright Nova Erupts in Cassiopeia

A new nova in Cassiopeia, discovered on March 18th, is bright enough to see in a small telescope.

Algol

Variable Stars

Take a Roller Coaster Ride with Algol, a Fast Eclipsing Binary

How would you like to see a star drop two magnitudes in the time it takes to eat dinner? Easy to do. Just check out one of these fast eclipsing binaries — they'll make your head spin.

Betelgeuse telescopic view

Stellar Science

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?

A bright supernova

Celestial Objects to Observe

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.

Betelgeuse in Orion

Celestial Objects to Observe

Betelgeuse is Dimming . . . Why?

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

Variable Stars

Hunting Bright Variable Stars in M5 and M13

Globular clusters are packed with variable stars, some of which are easy to see and follow in amateur telescopes. We explore M5 and M13, two of the season's finest.

Variable Stars

Twinkle, Twinkle Quasi-Star — 12 Quasars for Spring Evenings

Quasars are among the brightest and most distant objects in the universe. Many are visible in amateur scopes if you know just where to look. We'll help you track them down.

Explore the Night with Bob King

Trick-or-Treat with the Seven White Dwarfs

In the Halloween spirit, we pay a visit to the cosmic dead, those tiny stars that should just fade away but always seem to be causing trouble instead.

Crown in the western sky

Celestial News & Events

R Coronae Borealis Awakes and Pluto Blocks a Star

Sometimes, it's just as exciting to watch a celestial object fade or disappear as it is to see it explode. We celebrate the "return" of a mysterious variable star and prepare for Pluto to occult a star.

R Leporis Carbon Star

Variable Stars

Observing Carbon Stars

Expand your observing plans by adding a few of these red-orange carbon stars.

Variable Stars

Dwarf Nova V392 Persei Goes Big — It's Now Binocular Bright

In a rare move, a sleepy cataclysmic variable blows its top and suddenly becomes a nova.

Explore the Night with Bob King

Put a Little Bit of Leo in Your Life

We lift the Lion's paw to find a bright, red variable star, a germinating planetary nebula, galaxies rarely visited, and a diversity of doubles.

Celestial News & Events

Mira Makes January Nights "Wonderful"

Mira, one of the easiest-to-observe pulsating variable stars, reaches peak brightness this month. Don't be shy, come look her in the eye. 

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