Exotic Exoplanet (Artist's Concept)

"Missing Link" Found

NASA's Galaxy Mission Celebrates Sixth Anniversary

Fearsome Foursome

Simulation of Galactic Collision (Simulation)

Large Face on Spiral Galaxy NGC 3344

NASA's Galaxy Mission Celebrates Sixth Anniversary

Menkhib and the California Nebula

Magician of a Planet Disappears to Reveal Itself

Tiny Particles, So Far Away

Celestial Cities and the Roads That Connect Them

Taken Under the 'Wing' of the Small Magellanic Cloud

Chaotic Star Birth

Thor's Helmet

Herschel's Cool Universe (Artist's Concept)

WISE's Last Light

The Extended Region Around the Planetary Nebula NGC 3242

Tour of Planet with Extreme Temperature Swings

Embedded Outflows from Herbig-Haro 46/47

Star Formation in the Heart of the Swan

Whirlpool Galaxy

Extremely Bright and Extremely Rare

Gorilla Black Hole in the Mist

In the Grip of the Scorpion's Claw

Extreme Planets (Artist Concept)

Black Hole Grabs Starry Snack (Artist Concept)

The Rocky World of Young Planetary Systems (Artist Concept)

Speed-Demon Star Creates a Shock

Possible Disintegrating Planet (Artist's Concept)

Stars Spring up Out of the Darkness (Artist Concept)

Trifid Nebula

Silicates in Alien Asteroids

Happy Anniversary to a Galactic Explorer

Comet Schwassmann-Wachmann I

Planetary Building Blocks Found in Surprising Place

Comets Kick up Dust in Helix Nebula

Pinwheel Looks 'Fab' in Infrared

Hustle and Bustle at Center of Milky Way

A Different View of the Flame Nebula

Galaxy Packs Big Star-Making Punch

Band of Rubble (Artist Concept)

Why Are Galaxies So Smooth?

Centaurus A All Prettied Up in Infrared and X-Rays

Young Solar System in the Making (Artist Concept)

Bursting with Stars and Black Holes (Artist Concept)

The Story of Our Universe

Plentiful Planetary System (Artist Concept)

Infrared Ring around Saturn

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

A Planet as Big as its Star