161–180 of 447 results

Variable Stars

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.

Deep Sky

Double Your Deep-Sky Pleasure with "Two-in-the-View"

Once you've seen two, a single won't do. Enjoy this selection of multiple deep-sky objects visible in the same field of view of your telescope.

People, Places, and Events

Get Ready for International Observe the Moon Night

Fascinated by our Moon? Want to know more about it? Join fellow lunar enthusiasts on Saturday, October 20th, for International Observe the Moon Night!

Planets

Observing Earth from the Moon

Ever wondered what it would be like to see the Earth from the Moon? Join Bob King as he explores this from the perspective of the Apollo 17 astronauts.

Celestial Objects to Observe

Meet Deneb, the Bright but Distant Star

Deneb, in the constellation Cygnus, is a star that shines brilliantly despite being one of the farthest you can see with the unaided eye.

Comets

The Sacred Hour Before Dawn and an Evening Comet Surprise

Silence can sometimes be in short supply, but one sure place to find it is under a starry sky before the first blush of dawn. Comet 29P/Schwassmann-Wachmann erupts again!

Explore the Night with Bob King

Here Comes the Harvest Moon!

This month's Harvest Moon will be up early to light the night as well as act as a beacon for watching the annual fall bird migration through a small telescope.

Horses head to head

Explore the Night with Bob King

Equuleus, the Constellation Nobody Knows

Often passed over in favor of showier sights, the constellation of the Little Horse has charms of its own. Let's saddle up and go for a ride.

Simply extraordinary

Deep Sky

Explore the Veil Nebula

The Veil Nebula, the tattered remains of an ancient supernova explosion, is one of the most spectacular objects in the night sky. Did you know it has two dozen parts visible in amateur telescopes?

Photo of Gemini with Pollux and Castor and Canis Minor with Procyon

Meet the Stars

Meet Pollux, the Red Giant with a Planet

Meet the stars: Pollux, one of the Twins in the sky, is a star that has swelled into its red giant phase while holding onto its Jupiter-like exoplanet, dubbed Thestias.

Pretty package

Comets

Comet 21P/Giacobini-Zinner Shines in September

Watch a binocular-bright comet leapfrog across Auriga in the next few weeks before a remarkable conjunction with the bright star cluster, M35.

Eight planets await

Planets

See All Eight Planets in One Night

Four planets are great, but how about eight? You can see them all in a single night in the next couple weeks — if you play your cards right.

Astronomy and Stargazing Projects

Shadow Play — Summertime Dark Nebulae for Binoculars

Using only binoculars, we explore a host of inky dust clouds, the dark nebulae that smudge the Milky Way on late summer nights.

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.

Regulus removed

Meet the Stars

Meet Regulus, Little King of the Ecliptic

Meet Regulus A, dubbed "Little King" and "Heart of the Lion," among the 25 brightest stars in the sky. The star belongs to a complex system, including a close white dwarf companion that makes its ultimate fate uncertain.

Explore the Night with Bob King

PanSTARRS Comet, Rocked by Outburst, Goes Green

Comet PanSTARRS (C/2017 S3) has erupted again! Now bright enough to see in binoculars, it might become a naked-eye object if it survives until perihelion.

Aldebaran Occultation

Occultations

Don't Miss Aldebaran's Last Occultation Till 2033

The last and one of the most picturesque occultations of Aldebaran by the Moon happens on Tuesday morning, July 10. Catch it or wait 15 years for the next!

Astronomy and Stargazing Projects

The Eyes Have it — Deep-Sky Observing Without Equipment

No telescope? No problem. Just use your eyeballs! On a dark summer night at least two dozen deep-sky objects can be seen without optical aid.

Seeing

Daylight Phenomena

Quest for the Green Flash

If you like sunrises and sunsets, look for the green flash, a phenomenon that happens more often that you think.

Planets

Observe Changes on Mars

The nearby Red Planet displays remarkable changes every apparition. Whenever Mars approaches opposition, keep an eye out for some of these differences.

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