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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

Moon

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

Bright 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.

29Pgoes pop!

Comets

Where Have All the Comets Gone?

It seems like forever since a bright comet has come around. We look at current and future prospects.

Deep Sky

How Low Can You Go? Journey to the Bottom of the Sky

How Low Can You Go? Journey to the Bottom of the Sky

Diamond Ring

Celestial Objects to Observe

Plan for the Next Total Solar Eclipse

Totality is addictive — once you've seen one total solar eclipse, you're hankering for the next one. Some exciting destinations are getting ready for their dances with darkness.

Explore the Night with Bob King

Welcome Back, Milky Way!

Twilight's end brings the return of the summer Milky Way to the eastern sky. We unravel the anatomy of our home galaxy by teasing out the hidden structures within that glowing band. 

Flakey Red Spot

Explore the Night with Bob King

Jupiter Is Outstanding at Opposition

Prime-time Jupiter viewing kicks off this month when the planet reaches opposition on June 10th. 

An arm to the sun

Celestial News & Events

SpaceX Launches First Volley of Starlink Satellites

The 60 Starlink satellites parading across the sky make an incredible sight, but some skywatchers wonder at what cost to the night.

Star queen of Serpens

Explore the Night with Bob King

See Bright Nebulae Millions of Light-Years Away

We leave the Milky Way behind and venture out to explore giant star-bursting regions in the galaxies M101 and NGC 2366.

Bob King Watches an ISS pass

Celestial News & Events

Watch International Space Station Flybys All Night Long

The annual International Space Station marathon viewing season begins later this week, when skywatchers in the Northern Hemisphere can watch up to five successive ISS passes in one night.

Bumbling along

Explore the Night with Bob King

The Moon Bumbles Into the Beehive Friday

The thick crescent Moon occults oodles of stars in the Beehive star cluster Friday evening for much of the Americas.

Spica and Corvus

Bright Stars

Meet Spica, the Ear of Grain

Meet Spica, the "ear of grain" in the constellation Virgo. This bright star is actually part of a binary orbiting so closely, they tug each other out of spherical shapes and whirl around each other every four days.

Explore the Night with Bob King

Hunting Bright Variable Stars in M5 and M13

Globular clusters are packed with variable stars, some of which are easy to see and follow in amateur telescopes. We explore M5 and M13, two of the season's finest.

Double Stars

Double Date with a Dragon

For your enjoyment, a diverse selection of double stars in Draco for small and medium telescopes.

Deep Sky

Yanking Markarian's Chain

Markarian's Chain, a remarkable arc of bright galaxies, is your ticket to the Virgo Cluster. Hop aboard!

Explore the Night with Bob King

Twinkle, Twinkle Quasi-Star — 12 Quasars for Spring Evenings

Quasars are among the brightest and most distant objects in the universe. Many are visible in amateur scopes if you know just where to look. We'll help you track them down.

Protoplanet of intrigue

Asteroids

Pop in on Pallas and Iris Tonight

Break out your binoculars or telescope the next clear night for a peek at the bright asteroids Pallas and Iris, both at opposition this spring. 

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