241–260 of 602 results

Planets

Ice Giants: Neptune and Uranus

Spot Uranus and Neptune, and relive the original discoveries.

NTB via Juno

Comets

Stormy Times on Jupiter, Comet Howell Steps Up, and More

Colder weather might be coming, but don't pack away that telescope! You'll miss a powerful storm that's remaking Jupiter's North Temperate Belt, a returning comet, Mira on the rise, and a bright supernova in the Great Bear.

Antares, imaged

Meet the Stars

Meet Antares: The Star That Is Not Mars

Antares is a red supergiant that — like Betelgeuse — will one day go supernova.

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.

Looking back at Pluto

Planets

Cool Off with Pluto This Summer

Pluto might be a challenging target but it's well worth the effort. Grab your telescope and see if you can spot this distant, chilly world.

people in a small boat pass in front of a large iceberg

Celestial Objects to Observe

500 Days Until the Total Solar Eclipse Over Antarctica

Travel to the ends of the Earth to experience a special — but risky — total solar eclipse in Antarctica.

Sharing Comet NEOWISE

Comets

Comet NEOWISE Dazzles at Dusk

Comet NEOWISE has captivated skywatchers with its stunning tail. Now that it's moved into the evening sky and climbing higher each night even more people will get a chance to see it.

Comet NEOWISE

Comets

Comet NEOWISE Delights at Dawn

Skywatchers are treated to a naked-eye comet as NEOWISE emerges into the the dawn sky.

Lemmon in bloom

Comets

Anticipation Grows for Comets NEOWISE and Lemmon

Two comets spark excitement for the coming week — NEOWISE might reach naked-eye visibility at dawn, while Lemmon will be visible in binoculars at dusk.

Two crescents meet

Occultations

Watch the Moon Pair Up with Venus on June 19th

Two crescents — the Moon and Venus — meet in the sky in the wee hours of June 19th.

Noctilucent clouds in British Columbia

Daylight Phenomena

Nights of Noctilucent Clouds

Noctilucent clouds shimmer high in the sky during summer twilight at northerly latitudes.

Ring Nebula

Deep Sky

Evenings with the Ring Nebula

Everyone loves this cosmic donut. Like Saturn, the Ring Nebula is a must-see for beginners and seasoned amateurs alike. Whether you're just cutting your deep-sky teeth or attempting to see its central star — one of visual astronomy's Holy Grails — the Ring has it all.

Sun

95 Sunrises Along the Columbia Riverbank

Margaret Greenwood explores the changing location of sunrises throughout the year.

Venus-Jupiter conjunction

Planets

How Bright Are the Planets?

What do Venus and Jupiter have in common? Revisions to planets' magnitudes in this year's Astronomical Almanac have revealed some surprises.

Deep Sky

Globular Clusters Await: Hello, Messier 3!

Globular cluster season is here. Time to get out your charts, binoculars, and telescopes and enjoy these wondrous objects.

Whirlpool Galaxy

Deep Sky

See Spring's Finest Spiral Galaxies

Spring skies offer some of the best sights of spiral galaxies. Point your scope at some of these magnificent cosmic whirlpools.

Planets

See the Phases of Venus

If you have a set of binoculars or a telescope, watch for Venus’s thinning crescent over the next couple weeks.

Deep Sky

Supernovae Light Up in M61 and NGC 3643

Two new supernovae for amateur telescopes are keeping things lively this month.

Comets

Comet SWAN Expected to Put on a Splendid Show

Comet SWAN will grace northern skies in the days to come.

Asteroids

Chase a Potentially Hazardous Asteroid As It Flies by Earth

Break out your binoculars or a small telescope, we've got a busy week ahead! Watch as a bright asteroid approaches Earth, the Moon steals a star, and Comet ATLAS's last hurrah.