1–20 of 447 results
Dawn planet line

Explore the Night with Bob King

Solar System Gets its Ducks in a Row

We'll have not one but many opportunities to enjoy a rare lineup of the bright planets over the next few weeks. Amazingly, they'll be aligned in order of their distance from the Sun.

Tau Herculid fireball

Explore the Night with Bob King

Tau Herculid Meteors Surprise and Delight

We touch on the highlights of the memorable Tau Herculid meteor shower and also report on the recent outburst of the recurrent nova U Scorpii.

Geminid meteor shower

Meteors

Update on a Possible Outburst of Meteors

Will there be a new meteor shower on the night of May 30–31? There's only one way to find out.

Big Dipper

Explore the Night with Bob King

A New Way to See the Big Dipper

Unlike most asterisms, many of the Big Dipper's stars really are physically connected. They belong to a loosely bound stellar stream called the Ursa Major Moving Cluster.

Naked eye sunspots

Explore the Night with Bob King

How to Observe and Measure Naked-eye Sunspots

As Solar Cycle 25 ticks up, naked-eye sunspots are becoming more frequent. They're not only fun to observe, but with this simple method you can determine just how big they are. We also have news on a bright supernova!

Bright Lyrid

Explore the Night with Bob King

Celebrate Spring with the Lyrids

People have been watching the annual Lyrid meteor shower for more than 2,700 years. Come join the crowd!

Celestial News & Events

Plan Now for the 2023 Solar Eclipse in Western Australia

Here's what to know if you want to see this hybrid (mostly total) solar eclipse next year.

Total solar eclipse 2019 in Chile

Celestial Objects to Observe

Two Years to the 2024 American Total Solar Eclipse!

It’s never too early to start getting excited — and begin planning — for an event as spectacular as a total solar eclipse.

Diamond Ring

Celestial Objects to Observe

Tips for Photographing a Total Solar Eclipse

A total eclipse of the Sun is a spectacular sight. With a little preparation and advance planning, you can capture your own souvenir portrait of this awe-inspiring sight.

Halpha sun with prominences

Celestial Objects to Observe

How to Look at the Sun Safely

Our star is an amazing object to observe, whether by eye or with optical aid. These time-tested tips will let you see the solar disk worry-free.

Celestial Objects to Observe

Eclipse Photographer’s Checklist

For those preparing to photograph a total solar eclipse, Fred Espenak shares his eclipse photography checklist.

Comet ATLAS (C/2019 L3)

Night Sky Sights

Comets to View in 2022

Like comets? We've got 11 frozen fuzzies to share with you in the coming months, including a couple that could become fine binocular objects.

Canis Minor

Celestial Objects to Observe

Meet Procyon, Orion’s Littler Dog

Meet Procyon, the brightest of the few stars in Canis Minor, the Lesser Dog. On its way to becoming a giant, this star is part of the Winter Triangle and Wniter Hexagon asterisms.

Saturn 2011 Cassini

Explore the Night with Bob King

Will Saturn Sprout Spots this Observing Season?

As Saturn returns to the morning sky, will this otherwise serene-looking planet experience another bout of severe weather? Keep your eyes peeled for white spots!

Shackleton Crater

Celestial Objects to Observe

Meet Shackleton Crater: Future Moon Landing Site

Shackleton Crater at the lunar south pole is a site of future exploration — and you can even see it through your telescope during favorable librations.

Full moon and Earth shadow

Explore the Night with Bob King

Uncovering Secrets of Earth's Shadow

The daily rising and setting of Earth's shadow is a beautiful sight anyone on the planet can view. It's also an opportunity to witness the rapid changes that accompany sunset or sunrise, but at the opposite end of the sky.

Southern Milky Way gazing

Explore the Night with Bob King

Reveling in the Winter Milky Way

With the Moon departing the evening sky, now's a good time for a closer look at the northern winter Milky Way and its southern summer counterpart, too. No equipment required!

Labeled Big Dipper

Celestial Objects to Observe

Meet Mizar and Alcor: The Horse and Rider

Mizar and Alcor, stars sometimes referred to as "the horse and the rider," serve as a vision test and an introduction to "double stars."

Lunar eclipse composite Nov 19 2021

Celestial News & Events

Solar and Lunar Eclipses in 2022

Although no total or annular solar eclipses occur this year, skywatchers can look forward to two total lunar eclipses — the first ones observable across North America in more than 3 years.

Mare Orientale gravity map

Moon

Set Your Sights on This Lunar Bull’s-Eye

Go ahead, live on the edge: Grab your chance this month to see Mare Orientale, one of the most spectacular lunar seas most people have never seen.

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