Spitzer Digs Up Galactic Fossil

The Colorful Demise of a Sun-like Star

Supernova Remnant in 3-D

Bright Lights, Green City

A Distant Solar System (Artist's Concept)

Messier 101 Single Orbit Exposure

Mega Galaxy Merger

A Star-Bursting Filament

Galaxies Collide to Create Hot, Huge Galaxy

Life's Starting Materials Found in Dusty Disk

Galactic Halos of Hydrogen

Missing Black Holes Found!

The Case of the Disappearing Continent

Dissecting the Wake of a Supernova Explosion

Astronomers Detect First Organic Molecule on an Exoplanet (Artist's Concept)

Spitzer Telescope Sends Rose for Valentine's Day

Massive Smash-up at Vega (Artist Concept)

How to Spot a Primitive Black Hole

Galaxies Burn Bright Like High-Wattage 'Light Bulbs'

Collecting Brown Dwarfs in the Night Sky

Stars Brewing in Cygnus X

Homing in on 'Hot Dogs'

Speed-Demon Star Creates a Shock

The Galaxy Menagerie from WISE

Quartz-like Crystals Found in Planetary Disks

Irregular Dwarf Galaxy IC 1613

The Story of Our Universe

Multi-Wavelength Views of Protostars in IC 1396

Giant Star Goes Supernova, Smothered by its own Dust (Artist's Concept)

Dwarfs in Coma Cluster

Dead Star Creates Celestial Havoc

Galactic City at the Edge of the Universe

All Eyes on Oldest Recorded Supernova

Little Galaxy Explored

Thackeray's Globules

Forecasting Weather on Distant Worlds (Artist Concept)

Oxygen in Orion

Steamy Solar System

Menkhib and the California Nebula

NASA's Kepler Mission Discovers Its First Rocky Planet (Artist Concept)

Galaxy Centaurus A

Galaxy Packs Big Star-Making Punch

Eagle Nebula Flaunts its Infrared Feathers

'Peony Nebula' Star Settles for Silver Medal

Embedded Outflows from Herbig-Haro 46/47

'Southern Pinwheel' Galaxy M83

Spitzer Makes "Invisible" Visible

Hustle and Bustle at Center of Milky Way

A Stellar Ripple