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Comet C/2024 G3

Celestial Objects to Observe

Comet ATLAS (C/2024 G3) Kicks off the New Year — What to Expect

The Southern Hemisphere should get a good show of Comet ATLAS (C/2024 G3). Mid-northern latitude observers not so much.

Full Moon passing Jupiter and Aldebaran, Dec. 14, 2024

This Week's Sky At a Glance

This Week's Sky at a Glance, December 13 – 22

The full Moon will line up with Jupiter and Aldebaran . . . but how well for you? Saturn gets right (angled) with Fomalhaut and Venus. Saturn's two largest moons will form a double star, and three of Jupiter's moons will triangulate.

Geminid in moonlight

Celestial Objects to Observe

Don't Let the Bright Moon Ruin Your Geminids

Strategies for making the most of this week's Moon-soaked Geminid meteor shower.

Jupiter outbreaks

Celestial Objects to Observe

You're Invited to Jupiter's Big, Bright Opposition Bash

Don't let the cold keep you inside — Jupiter beckons with a brand new storm!

Moon passing Saturn, Dec 7-8, 2024

This Week's Sky At a Glance

This Week's Sky at a Glance, December 6 – 15

The Moon this week shines with Saturn at first quarter, then with Jupiter when full. No surprise; the two giant planets are almost exactly 90° apart. Jupiter is at opposition, and Saturn is at quadrature.

Jupter and three moons on 6 Jan 2025

Observing

More Unusual Jovian Satellite Lineups

In the coming weeks, Jupiter’s four Galilean satellites will arrange themselves in some unusual geometric patterns that will be fascinating to observe.

Jupiter Aldebaran and Orion in December 2024

Sky Tour Astronomy Podcast

December Podcast: Jupiter Leads the Way

It’s going to be a fun month for planet-watching, and you can count on the month’s Sky Tour episode to tell you where and when to catch the five “wandering stars” that you can see by eye. Even better, this month fetures what is arguably the best meteor show of the year. Listen now!

The crescent Moon shines with Venus in twilight Dec. 4, 2024

This Week's Sky At a Glance

This Week's Sky at a Glance, November 29 – December 8

This Wednesday evening, the crescent Moon will beautifully partner with Venus. And, for these next two weeks we get the earliest sunsets of the year.

Observing with 20-inch Dob

Celestial Objects to Observe

Hunting Dwarf Galaxies in the Sooner State

A dark-sky quest leads to encounters with two Milky Way companion galaxies and other dim delectables.

Venus and sinking Mercury in twilight, Nov. 22, 2024

This Week's Sky At a Glance

This Week's Sky at a Glance, November 22 – December 1

Last call for Mercury! On the opposite side of the sky, Jupiter and Mars climb up ever earlier. And the waning crescent Moon occults Spica for eastern and central North America.

Venus and fainter Mercury in twilight in the middle weeks of November 2024

This Week's Sky At a Glance

This Week's Sky at a Glance, November 15 – 24

Venus and Mercury continue as a duo in the western twilight this week. The Moon visits Jupiter, then Mars. Saturn shines lonely below the Great Square.

Spica reappearance Chicago

Celestial Objects to Observe

Watch the Moon Occult the Pleiades, Spica too!

The Moon crosses the Pleiades this week, then heads east for the year's most dramatic Spica occultation.

Venus and fainter Mercury in twilight in the middle weeks of November 2024

This Week's Sky At a Glance

This Week's Sky at a Glance, November 8 – 17

The stars betray that we've tipped from the season of warm evenings to the cold (or at least crisp). And the Moon this week skims Saturn, then the Pleiades.

Catch the thin crescent Moon paired with Venus in Monday's twilight (Nov. 4, 2024)

This Week's Sky At a Glance

This Week's Sky at a Glance, November 1 – 10

The thin crescent Moon pairs beautifully with Venus low in Monday's twilight. And be on the lookout for any Taurid fireballs this week!

Cassiopeia & company

Sky Tour Astronomy Podcast

November Podcast: Cassiopeia & Company

November’s night skies feature a cluster of prominent constellations led by a celestial queen. Our guided audio tour tells you how to identify them, along with tips for spotting all five bright planets and three meteor showers.

Perseus constellation art

Celestial Objects to Observe

Meet Algol, the Demon Star

Meet Algol, a "winking" eclipsing binary star that glares out from the constellation Perseus.

PG 1634+706 quasar

Celestial Objects to Observe

Find a Quasar in the Sky Tonight and Time Travel to the Early Universe

Travel to the faraway and long ago by riding a quasar's beam.

Venus and Antares in conjunction, Oct. 25, 2024

This Week's Sky At a Glance

This Week's Sky at a Glance, October 25 – November 3

Fading Comet Tsuchinshan-ATLAS poses high in a moonless sky for its fans with binoculars and telescopes, even as we wave farewell for at least a hundred thousand years, maybe forever. Meanwhile four brighter, more permanent members of the solar system await attention.

C/2023 A3 with ion tail Oct. 19

Celestial Objects to Observe

Grab Comet Tsuchinshan-ATLAS by the Tail

We check in with the brightest comet of the year and see what's next, plus an update on Comet ATLAS (C/2024 S1), which still shows signs of life.

Venus, Antares and the head of Scorpius low in twilight, Oct. 18, 2024

This Week's Sky At a Glance

This Week's Sky at a Glance, October 18 – 27

Comet Tsuchinshan-ATLAS fades and shrinks as it rises high into a darker sky. Venus passes Antares. The waning Moon passes the Pleiades, Jupiter, and Mars. Arcturus becomes the Ghost of Summer Suns.