1–20 of 414 results
Moonrise refraction

Moon

Find a Horizon and Savor the Bending of Light

The full Strawberry Moon on June 3rd invites us to experience the refractive power of Earth's atmosphere.

Supernova 2023ixf in M101

Explore the Night with Bob King

Bright Supernova Blazes in M101, the Pinwheel Galaxy

A supergiant star exploded as a supernova in the prominent galaxy M101 in Ursa Major. It's now bright enough to see in a 4.5-inch telescope!

Jupiter-Moon occultation

Explore the Night with Bob King

See the Moon-Jupiter Trifecta: Conjunction, Occultation, and Double-Shadow Transit

The May 17th dawn pairing of Jupiter and the Moon may be one of the most amazing conjunctions you'll ever see.

End of journey for NJ meteorite

Explore the Night with Bob King

Scientists Confirm: Meteorite Crashed Into New Jersey Home

A rock that crashed through the roof of a house in New Jersey proved to be the real thing — a chunk spalled from a 4.5 billion-year-old asteroid.

Coronal aurora blast

Explore the Night with Bob King

Lie Back, Look Up, and Find Your Zenith Stars

When you want to relax under the stars there's no better way than on your back looking up at the zenith. We explore what's overhead and discover there's more than one zenith up there.

29-hour-old Moon

Explore the Night with Bob King

See the Young Moon and the Lyrid Meteor Shower

We have an exciting week ahead with a crescent Moon that might break your observing record followed by a well-timed Lyrid meteor shower.

Lunarisms locator

Solar System

Pleasures of Lunar Pareidolia

Do you still see animal shapes in clouds? If so, you'll enjoy doing the same with the Moon, home to the Moon Maiden, a giant pair of scissors, and other fantastic specters of light and shadow.

C/2023 A3 orbit

Explore the Night with Bob King

Anticipating Comet Tsuchinshan-ATLAS (C/2023 A3)

Newly discovered Comet C/2023 A3 might reach naked-eye brightness when it flies past Earth in 2024. Check out our forecast of what to expect to see in the months ahead.

Big Dipper

Explore the Night with Bob King

Tell Time with the Big Dipper; See Ceres Transit a Spiral Galaxy

Phone battery dead? Learn how to tell time with the Big Dipper. Also, don't miss a remarkable transit of Ceres in front of the bright spiral galaxy M100.

Red aurora

Auroras

Aurora Season Is Underway

These are the nights to get ready for the auroras — and tonight may be your lucky night. Not only is the current solar cycle swiftly intensifying, March is one of the best times of the year to see the northern lights.

Orion Nebula with T Ori

Variable Stars

Catch Birth Flickers of Budding Suns in Orion

Three flickering stars in Orion offer insight into what life looks like before the main sequence.

Comet ZTF (C/2022) and Mt. Etna

Comets

Understanding the Tails of Comet ZTF (C/2022 E3)

We explore Comet ZTF's remarkable trio of tails and share the latest news and photos.

Comet ZTF E3 dust tail

Comets

See Comet ZTF (C/2022 E3) Dash Between Big and Little Dippers

Forget the hype and go outside to enjoy the real thing — a relatively bright comet you can see in binoculars from a dark sky.

2023 BU close approach

Solar System

Tiny Asteroid 2023 BU to Miss Earth

A recently discovered asteroid will pass exceptionally close to Earth on January 26th. Here's how to see it. Also, Comet ZTF (C/2022 E3) is brightening nicely, with three tails visible in binos.

Winter Pair-a-gon

Double Stars

Explore Double Stars in the "Winter Pair-a-gon"

The Winter Hexagon is not only key to finding six of the season's most prominent constellations but also a gateway to a more than a half-dozen delightful double stars.

June 2022 planets

Solar System

All Eight Planets Line Up ... Again!

Echoing summer's great arc of planets at dawn, winter presents the full octet again, this time splayed across the evening sky.

Geminid over Tucson

Celestial News & Events

Catch the Geminid Meteor Shower; Plus, Watch RW Cephei Fade

The luminous Geminid meteor shower returns. We also meet a binocular-bright star that may be experiencing Betelgeuse-like convulsions.

Mars up close

Explore the Night with Bob King

Mars Mesmerizes at Opposition

It may not be the closest opposition, but this time around Mars arcs high across the sky where good seeing promises sharp views. That's not all. On December 7th, one night before opposition, the full Moon occults the Red Planet!

Comet ZTF (C/2022 E3) up close

Explore the Night with Bob King

Sneak Peek at Two Promising Comets

Ready to chase comets? We look at two fuzzy solar system travelers that will keep you on your toes all fall and winter long.

Stars and moon

Explore the Night with Bob King

Election Eclipse — Last Total Lunar Eclipse till 2025

Set the alarm and bring plenty of coffee. We've got a total lunar eclipse coming that you don't want to miss.

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