Happy Anniversary to a Galactic Explorer

Kepler-11 Planetary System (Artist Concept)

The Sword of Orion

Probing Exoplanets From the Ground (Artist Concept)

Riding a Trail of Debris

Forecast for Exotic Weather (Artist Concept)

Galactic Metropolis

Planetary Building Blocks Found in Surprising Place

Speed-Demon Star Creates a Shock

Vivid View of Tycho's Supernova Remnant

Zeta Ophiuchi -- Runaway Star Plowing through Space Dust

Asteroid Caught Marching Across Tadpole Nebula

Spitzer Finds Clarity in the Inner Milky Way

Wave of a Planet

Little Galaxy Explored

Steamy Solar System

Highway to the Danger Zone (Artist Concept)

Hiding Out Behind the Milky Way

WISE Reveals a Hidden Star Cluster

Three Great Eyes on Kepler's Supernova Remnant

Young Stars Emerge from Orion's Head

Antennae

Big Black Holes Mean Bad News for Stars (diagram)

Milky Way Dust at Different Scales

Fingerprints in the Light

Spitzer Celebrates Fourth Anniversary with Celestial Fireworks

Centaurus A All Prettied Up in Infrared and X-Rays

Dragon's Lair

Portrait of a Galaxy's Life

Star Cluster Overshadowed by Infrared Objects

Black Hole Spills Kaleidoscope of Color

Stellar Jewels Shine in New Spitzer Image

Cosmic Alligator Eats its Way through the Sky

Ancient Supernova Revealed

GALEX 1st Light Near and Far Ultraviolet -100

Double the Rubble (Artist Concept)

Exotic Atmospheres (Artist Concept)

Orion's Big Head Revealed in Infrared

Ultraviolet Extensions

Stars Adorn Orion's Sword

Globular Cluster NGC 1851 in the Southern Constellation Columba

M33: A Close Neighbor Reveals its True Size and Splendor

Black Hole Swallows a Star

Stellar Storm of Infrared Light

A Distant Solar System (Artist's Concept Animation)

Planetary Demolition Derby

A Dwarf Galaxy's Star Bar and Dusty Wing

Cygnus Loop Nebula

Spitzer's First Warm Images

'Mini-Me' Solar System (Artist Concept)

M33: A Close Neighbor Reveals its True Size and Splendor (3-color composite)