101–120 of 442 results
Betelgeuse in Orion

Celestial News & Events

Betelgeuse is Dimming . . . Why?

The bright star Betelgeuse has faded to a historic low as astronomers try to figure out why.

Geminids Dec 13_2018 Bob King 480x274

Celestial News & Events

The Best Meteor Showers in 2020

Sky & Telescope predicts that the three best meteor showers — the Quadrantids (peaking on January 4th!), Perseids and Geminids — will all have strong showings this year.

The Great Square of Pegasus

Explore the Night with Bob King

Deep-sky Dive Into the Great Square of Pegasus

We return to Pegasus, but this time with a telescope to find a grab-bag of overlooked deep-sky treasures.

Altair skyscape

Celestial Objects to Observe

Meet Altair, the Eagle’s Eye

Altair, centerpiece of Aqulia, the Eagle, is the twelfth-brightest star in the night sky and one of the closest stars to Earth.

Incoming point

Celestial Objects to Observe

"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.

Pandora

Celestial Objects to Observe

A Guide to All of the Moons of the Solar System

Not so long ago, astronomers thought only a few dozen moons orbited the planets of our solar system. Today, the total count tops 170!

Moon

International Observe the Moon Night 2019

Observe the first-quarter Moon on October 5 for International Observe the Moon Night. Here's a guide to tell you what to look for.

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 Objects to Observe

Meet Barnard’s Star, Our Red Dwarf Neighbor

This faint red dwarf star is famous not because it's bright but because it's fast-moving — you can actually see it moving across the sky if you track it over several years.

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.

Explore the Night with Bob King

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.

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…

Moon phases in perspective

Moon

August Will Have Two New Moons! What’s the Big Deal?

First there were "blue Moons;" now there are "black Moons." What do these terms mean . . . and do they matter?

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.

Armstrong, Aldrin & Collins

Explore the Night with Bob King

Celebrate Apollo 11 with a Visit to Armstrong, Aldrin and Collins Craters

Find the craters named for the three astronauts who flew the first manned mission to land on the Moon.

Canopus

Meet the Stars

Meet Canopus, the Second Brightest Star

The second-brightest star after Sirius, Canopus is visible in southern skies, shining out of the constellation Carina.

Planets

A Spoonful of Saturn to Sweeten the Night

Move over Jupiter, it's time for Saturn to shine! At opposition this week, the ringed planet is at its brightest and closest for the year.

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