1061–1080 of 1,389 results
The Moon Unmagnified

Explore the Night with Bob King

How to See Lunar Craters with the Naked Eye

Who says you need a telescope to see craters on the Moon? Here's how to find a half-dozen with just the naked eye.

Earth on October 19, 2015

Astronomy in Space with David Dickinson

DSCOVRing Earth

An innovative Earth-observing satellite now shows near-daily views of our home planet online.

Astronomy Travel

The Night of the Blazing Aurora

A group of about 40 intrepid souls from the U.S. and Australia hits pay dirt on a tour of Iceland

Multi-faceted beauty

Explore the Night with Bob King

Discover a Dozen Clusters in the "W"

Open your bag wide as we go trick-or-treating in the "W" of Cassiopeia, home to more than 100 star clusters.

Dust with bling

Explore the Night with Bob King

Take the Gegenschein Challenge

How and when to see the gegenschein, cousin of the zodiacal light and one of the greatest night sky naked-eye challenges.

Pop goes the nova

Explore the Night with Bob King

"Blink" a Nova Tonight

Like people doing good imitations, novae often mimic planetary nebulae. Read on to learn how to watch the evolution of these tricksters using a common nebula filter.

Astrosat Launch

Astronomy in Space with David Dickinson

India Launches First Astronomy Satellite

AstroSat launched into orbit on September 28, 2015, and will soon start returning visible, ultraviolet, and X-ray images of the universe.

Near miss

Explore the Night with Bob King

Moon Hides Hyades, Occults Aldebaran Friday

After a late-night ramble through the Hyades cluster, the waning gibbous Moon will cover up the bright star Aldebaran for observers across North America Friday morning.

Monster in our midst

Explore the Night with Bob King

Observer's Guide to the H-alpha Sun

Want to see a star rock in real time? Observe the Sun in the crimson light of hydrogen alpha and watch it come alive.

Binocular basics

Explore the Night with Bob King

Watch Andromeda Galaxy Blossom in Binoculars

How much can you see of the Andromeda Galaxy system with just a pair of binoculars? Turns out a lot!

Apollo 12 witnesses solar eclipse

Astronomy in Space with David Dickinson

Views of Sunday’s Solar Eclipse from Space

Some of the most stunning views of Sunday's partial solar eclipse didn't come from Earth.

Simply magnificent!

Explore the Night with Bob King

How to See the Farthest Thing You Can See in the Night Sky

Step by step, we explore the farthest things visible with the naked eye, from the most distant star to the hinterlands of the Andromeda Galaxy

Gaia14aae, artist's conception

Explore the Night with Bob King

Violent Lights For September Nights

Find out how two closely-orbiting stellar pairs create fireworks you can see in your own backyard telescope.

Gaia14aae, artist's conception

Astronomy in Space with David Dickinson

Amateurs Help Discover Rare Eclipsing Binary

A collaboration of amateur and professional astronomers has uncovered a rare variety of eclipsing binary star - and a supernova in the making.

Worlds of gas and ice

Explore the Night with Bob King

Neptune And Its Maverick Moon Triton

Neptune reaches opposition next week, giving amateurs the chance to track its unique, backwards-orbiting moon Triton.

Gift at day's end

Explore the Night with Bob King

Tiptoe Into The Twilight Zone

Twilight. Gloaming. Dusk. Blue Hour — all names for that colorful and contemplative time between day and night. We explore twilight's brief but fascinating sights and learn why it gets shorter as summer turns to fall. Twilight takes us gently into that good night. I wouldn't mind spending time on the Moon, but I'd miss…

Asteroid Prospector Flyer prototype

Astronomy in Space with David Dickinson

Robotic Flyers: Future of Space Exploration?

Quadcopters, the four-propellered drones that have become a familiar sight in terrestrial skies, may be the next big thing in space exploration.

Comet 67P/C-G

Explore the Night with Bob King

Rosetta's Comet Beckons At Dawn

Northern hemisphere observers have this month and next to get their best look at Rosetta's comet, 67P/Churyumov-Gerasimenko.

Explore the Night with Bob King

Let's Get Serious About Ceres

We pay a visit to Ceres, now the apple of the Dawn Mission's eye, as it creeps through Sagittarius this month

2015 HM10 on closest approach

Astronomy in Space with David Dickinson

Shedding New Light on Near-Earth Asteroids

Students captured some amazing videos of near-Earth asteroids this past month, demonstrating a powerful tool for learning about some of our nearest celestial neighbors.