41–60 of 343 results
The Great Square of Pegasus

Astronomy and Stargazing Projects

Counting Stars in the Great Square

Test the limits of your vision — and the darkness of your sky — by taking a plunge into the Great Square of Pegasus.

Explore the Night with Bob King

Meteor Shower Was a Dud, But Showing Up Was Half the Fun

The Alpha Monocerotids happened as predicted, even if not quite as we expected.

Alpha Monocerotid Radiants

Explore the Night with Bob King

Intense Meteor Storm Expected from the Alpha Monocerotids

Circle the date November 21st on your calendar, when a brief but potentially spectacular meteor storm might light up the night.

Celestial News & Events

Don't Miss Monday's Rare Transit of Mercury

On Monday, November 11th, Mercury will pass directly in front of the Sun and look a tiny black dot silhouetted against the brilliant solar disk. The event, called a transit, occurs approximately 13 times a century.

Incoming point

Explore the Night with Bob King

"Potentially Hazardous" Asteroid Is Headed For Your Telescope

A potentially hazardous asteroid makes a flyby of Earth this Friday, offering amateurs with modest telescopes a chance to ride along.

Explore the Night with Bob King

Crack Your Crescent Moon Record

Calling all crescent lovers! Here's a chance to set a new personal record by seeing one of the oldest moons ever.

Comet Africano in full glory

Celestial News & Events

Autumn Comets, Mira's Eye & The Orionid Meteor Shower

Four comets, a famous variable star, and sprinkles of dust from Halley's Comet are highlights of the October sky.

Celestial Objects to Observe

Treasure Hunting in the Hall of the Deep-Sky King

Cepheus, the King, has hidden his treasure well but not so much that curious amateurs can't find more than enough to stuff their pockets.

Interstellar Comet Borisov

Explore the Night with Bob King

Will Amateurs Be Able to See the New Interstellar Comet?

Only the second object thus far to visit the solar system from interstellar space, Comet Borisov is expected to reach perihelion in December. What can we see now?

Celestial News & Events

Another Interstellar Visitor Is Headed Our Way

An amateur astronomer has discovered a comet that might be the second interstellar visitor after 'Oumuamua — and it's heading for its closest approach to the Sun late this year.

Explore the Night with Bob King

Observe Neptune as it Comes to Opposition

Neptune, currently the Solar System's outermost planet, reached opposition on September 10th at magnitude 7.8 in Aquarius.

Crowning glory

Explore the Night with Bob King

Volcanoes Turn Twilights Purple

A rash of unusually colorful sunsets follows in the wake of two major volcanic eruptions. 

Trojan asteroids

Celestial News & Events

Be a Warrior — Tackle a Trojan Asteroid

You've seen Jupiter and its four brightest moons. Now meet the rest of the family — the Trojan asteroids.

Deep Sky

Get to Know the Ghostly Galaxies of Sagittarius

We often think of Sagittarius as home to one galaxy only — the Milky Way. But two members of the Local Group and a smattering of fainter galaxies reside here, too.

Explore the Night with Bob King

Good Morning, Orion!

An August jaunt at dawn reacquaints us with the constellation Orion, the harbinger of winter.

Moment of impact

Celestial News & Events

Texas Amateur Detects Possible Impact on Jupiter

It looks like Jupiter got slammed again! A bright flash from a possible impact lit up the planet's South Equatorial Belt Tuesday night. 

Explore the Night with Bob King

Perseid Prospects, Mornings with Mercury and the Lunar X

With the Perseid shower, a great morning apparition of Mercury, and a chance to see craters scratch out an X on the moon, skywatchers have a busy week ahead! 

Roadmap to a stellar nursery

Astronomy and Stargazing Projects

Wallow a While in the Lagoon Nebula

We take a dip in one of summer's finest nebulae and explore everything from spooky Bok globules to the tornadic Hourglass Nebula. Don't forget your snorkel, er, telescope! Sometimes a single deep-sky object becomes your whole universe. So it was for me when I took several deep wades in the…

Fireball Over Ontario

Celestial News & Events

Fireball May Have Dropped Meteorites in Ontario

A lime-green meteor as bright as the full Moon streaked across Canadian skies on July 24th and may have delivered free samples from the asteroid belt.

Multifaceted world

Planets

Lonely Pluto Is More than a Speck

With Saturn pointing the way, it's easy to venture into the Kuiper Belt this summer and pay a visit to Pluto.

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