'Peony Nebula' Star Settles for Silver Medal

Fun House Mirror in Space

White Dwarf Stars

A WISE 'Eye' on the Whole Sky

Bright Lights, Green City

Sounds of the Ancient Universe

Kepler's Diamond Mine of Stars

Spitzer Celebrates Fourth Anniversary with Celestial Fireworks

Prehistoric Black Hole (Artist's Concept)

Mysterious Blob Galaxies Revealed

Circle of Planetary Ashes (Artist's Concept)

Once an Onion, Always an Onion (Artist Concept)

Whirlpool Galaxy

Bursting with Stars and Black Holes (Artist Concept)

Cosmic Caper Unfolds in Infrared

Warped Andromeda

Planets Under a Red Sun (Artist's Concept)

Slender Galaxy with Robust Black Hole

Galaxies Gather at Great Distances

Galactic Halos of Hydrogen

Starburst Galaxy NGC 3310

A Twisted Star-Forming Web in the Galaxy IC 342

Analyzing Hot DOG Galaxies

Happy Anniversary to a Galactic Explorer

Menkhib and the California Nebula

The Helix Nebula: Unraveling at the Seams

Trigger-Happy Cloud

The Seven Sisters Pose for Spitzer

Dusty Death of a Massive Star

Dark Murky Clouds in the Bright Milky Way

Towering Infernos

Galactic Pile-Up (Artist Concept)

Into the Depths of the Lagoon Nebula

Galaxy NGC5398

Dark Star-Making Factory

Cosmic Epic Unfolds in Infrared

Galaxy Packs Big Star-Making Punch

Edge-on View of Near-Earth Asteroids

How to Map a Very Faraway Planet (animation)

Reigning Title-Holder for Coldest Brown Dwarf

Homing in on 'Hot Dogs'

Where Galactic Snakes Live

Anomalous Arms

Coronet: A Star-Formation Neighbor

All Pillars Point to Eta

Dark Energy and Gravity: Yin and Yang of the Universe (Artist's Concept)

Edge-on Galaxy

Astronomers Uncover One of the Youngest and Brightest Galaxies in the Early Universe

Map of Matter in the Universe

Blinded by the Light (Artist Concept)

The Universe Comes into Sharper Focus