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Red Sprite Lightning with Aurora: What's that in the sky?

The Red Rectangle Nebula from Hubble: How was the unusual Red Rectangle nebula created?

Blue Sun Bursting: Our Sun is not a giant blueberry.

Earths Richat Structure: What on Earth is that?

Comet PanSTARRS with Anti Tail: Once the famous

The Waterfall and the World at Night

Four X-class Flares: Swinging around the Sun's eastern limb on Monday,

Kepler's Supernova Remnant in X Rays: What caused this mess?

Partial Solar Eclipse with Airplane: It was just eight minutes after sunrise, last week, and already there were four thi...

Clouds, Birds, Moon, Venus: Sometimes the sky above can become quite a show.

Cape York Annular Eclipse: This week the shadow of the New Moon

Messier 77: Face on

Ring of Fire over Monument Valley: As the New Moon

Earth's Major Telescopes Investigate GRB 130427A: A tremendous explosion has occurred in the nearby universe and major t...

Galaxy Cove Vista: To see a vista like this takes patience, hiking, and a camera.

Tails of Comet Lemmon: What caused the interestingly intricate tails that Comet Lemmon displayed earlier this year?

A Supercell Thunderstorm Cloud Over Montana: Is that a spaceship or a cloud?

Hungarian Spring Eclipse: Last week, as the Sun set a Full Moon rose over

Horsehead: A Wider View: Combined image data from the massive,

Saturn Hurricane

Omega Centauri: The Brightest Globular Cluster: This huge ball of stars predates our Sun.

Humanity Explores the Solar System: What spacecraft is humanity currently using to explore our

Milky Way and Stone Tree: What's that next to the Milky Way?

A Raging Storm System on Saturn: It was one of the largest and longest lived storms ever recorded in our Solar System.

Sharp Stereo: Get out your

A Year on the Sun: Our solar system's

Lunar Eclipses: The dark, inner shadow of planet Earth is

X rays from Supernova Remnant SN 1006: What looks like a puff-ball is surely the remains of the brightest supernova in r...

The Horsehead Nebula in Infrared from Hubble: While drifting through the cosmos,

The Big Dipper: Do you see it?

Airglow, Gegenschein, and Milky Way

NGC 1788 and the Witch s Whiskers

Star Factory Messier 17

Mt Hood and a Lenticular Cloud: What kind of cloud is next to that mountain?

Grand Spiral Galaxy M81 and Arps Loop: One of the brightest galaxies in planet Earth's sky is similar in size

IC 1848: The Soul Nebula: Stars are forming in the Soul of the Queen of Aethopia.

Crescent Neptune and Triton: Gliding silently through the outer

Sun with Solar Flare

Yuri's Planet: Yuri's Planet

Darkened City

Space Station Lookout: If you glanced out a side window of the International Space Station, what might you see?

NGC 3132: The Southern Ring Nebula: It's the dim star, not the bright one, near the center of

A Redshift Lookup Table for our Universe: How far away is

The Moons Saturn: Just days after sharing the western evening sky

Earth at Twilight: No sudden, sharp boundary marks the passage of day

Comet of the North: It looks like a double comet, but Comet PanSTARRS (C/2011 L4) is

M64: The Black Eye Galaxy: This beautiful, bright, spiral galaxy is

Comet PANSTARRS and the Andromeda Galaxy: Currently, comet PANSTARRS is passing nearly in front of the galaxy Andromeda.

IC 4592: The Blue Horsehead Reflection Nebula: Do you see the horse's head?

Moon or Frying Pan: Which is which?