Spitzer Space Telescope's View of Galaxy Messier 101

Astronomers Spot Most Distant Known Galaxy

Galaxy Mission Completes Four Star-Studded Years in Space

Herschel's Cool Universe (Artist's Concept)

Simulation of Galactic Collision (Simulation)

Galaxy NGC 4579

Seeing Baby Dwarf Galaxies

Pinwheel Looks 'Fab' in Infrared

Dance of the Light Echoes

Galaxy NGC 1850

Kepler's Diamond Mine of Stars

Star Clusters Young and Old, Near and Far

UX Tau A (Artist Concept)

Dwarfs in Coma Cluster

A Spiral Galaxy is Visited by a Trojan War Hero

Backward Black Hole Shoots Powerful Jets (Artist's Concept)

The Beginning of the End of Star Formation

Kepler-62 and the Solar System

Nursery of Giants

Happy Anniversary to a Galactic Explorer

Doradus Nebula

Cygnus Loop Nebula

Dissection of a Galaxy

NuSTAR's First View of High-Energy X-ray Universe

Spitzer Spies Spectacular Sombrero

Globular Cluster Messier 2 in Aquarius

Is There Anybody Home?

Dead Star Rumbles

White Dwarf Stars

Sizing Up Exoplanets

NGC 7293, the Helix Nebula

Galaxy M101

"Missing Link" Found

Surprise Ultraviolet Party in the Sky

Journey to a Star Rich with Planets (Artist Concept)

M33: A Close Neighbor Reveals its True Size and Splendor

Mysterious Object He2-90

Cosmic Fountain of Crystal Rain

Invisible Galaxies Come to Life! (Artist Concept)

Hidden Patterns of Light Revealed by Spitzer

Where Galactic Snakes Live

Eccentric Habitable Zones (Artist's Concept)

Little Galaxy Explored

Dust in the Quasar Wind (Artist Concept)

Seeing Stars in Serpens

Cosmic Cocoon

Edge-on Galaxy

Galactic City at the Edge of the Universe

It's Twins! Spitzer Finds Hidden Jet

Big Galaxy in Baby Universe