Kepler-20f -- An Earth-size World (Artist's Concept)

Galaxies of all Shapes Host Black Holes (Artist Concept)

Jumbo Jellyfish or Massive Star?

Star Formation in Henize 206

Massive Smash-up at Vega (Artist Concept)

All That Remains of Exploded Star

Lining Kepler Habitable Zone Planets Up

Baby Picture of our Solar System

Starburst Galaxy NGC 3310

Horsehead Nebula

Embryonic Stars Emerge from Interstellar "Eggs"

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

Irregular Dwarf Galaxy IC 1613

Amazing Andromeda in Red

Wanted: Galactic Thief Who Steals Gas

Circle of Ashes

Bridging Cities of Galaxies

A Picture of Unsettled Planetary Youth

Seven Sisters Get WISE

Finding Bubbles in the Milky Way

Young Stars Emerge from Orion's Head

In the Blackest Night, a Green Ring Nebula

Map of Matter in the Universe

Starry Starry Skies (Artist's Concept)

Hustle and Bustle at Center of Milky Way

Mira's Tail There All Along

Ancient Galaxy Cluster Still Producing Stars

A Distant Solar System (Artist's Concept)

A Glimpse of the Milky Way

Measuring Brightness of Super Earth 55 Cancri e

White Dwarfs: Small and Strong

Mapping the Infrared Universe: Part 1

Globular Cluster Messier 2 in Aquarius

Stars in Orion as Seen from Mars

Jiggling Soccer-Ball Molecules in Space

Galactic Dust Bunnies Found to Contain Carbon After All

The Evolution of a Planet-Forming Disk (Artist's Concept Animation)

A Slice of Orion

Stellar 'Incubators' Seen Cooking up Stars

Fingerprints in the Light

Cepheids as Cosmology Tools

White Dwarf Stars

WISE Peers into the Stellar Darkness

Sedna Orbit Animation

NASA's Great Observatories Celebrate the International Year of Astronomy

The Swirling Arms of the M100 Galaxy

WISE Eyes Evolution of Massive Stars

SIRTF "Aliveness Test" Image

A Different View of the Flame Nebula

Lump of Planetary Stuff