December 20, 2011First Earth-Sized Planets FoundKepler-20 planetary system
Artist's Conception 

December 20, 2011First Earth-Sized Planets FoundKepler 20 system
animation 

December 20, 2011First Earth-Sized Planets FoundKepler-20f
Artist's Conception 

December 20, 2011First Earth-Sized Planets FoundKepler-20e
Artist's Conception 

December 20, 2011First Earth-Sized Planets FoundExoplanet
Artist's Conception 

December 01, 2011Strange New "Species" of Ultra-Red Galaxy DiscoveredRed Galaxies
Unknown 

November 30, 2011New Exhibition, Website Guide Visitors through the Evolving UniverseWhirlpool Galaxy (M51)
Optical Image 

November 30, 2011New Exhibition, Website Guide Visitors through the Evolving UniverseIC 410
Optical Image 

November 18, 2011NASA's Chandra Adds to Black Hole Birth AnnouncementCygnus X-1
optical / art 

November 03, 2011City Lights Could Reveal E.T. CivilizationAlien-Lights
Unknown 

October 17, 2011Dark Matter Mystery Deepensdwarf galaxy
Artist's Conception 

October 06, 2011Crab Pulsar Dazzles Astronomers with its Gamma-Ray BeamsVERITAS and Crab Nebula
Artist's Conception 

October 06, 2011Crab Pulsar Dazzles Astronomers with its Gamma-Ray BeamsCrab Nebula
Artist's Conception 

October 06, 2011Crab Pulsar Dazzles Astronomers with its Gamma-Ray BeamsCrab Nebula
Artist's Conception 

October 03, 2011CfA Project Gets First Look through New ALMA TelescopeAtacama Large Millimeter/submillimeter Array
instrument 

September 29, 2011NASA Space Telescope Finds Fewer Asteroids Near Earthnear-Earth Asteroids
Infrared Image 

September 15, 2011From Star Wars to Science Fact: Tatooine-Like Planet DiscoveredKepler-16b
animation 

September 15, 2011From Star Wars to Science Fact: Tatooine-Like Planet DiscoveredKepler-16b
Artist's Conception 

September 08, 2011Invisible World DiscoveredKepler-19bc
Artist's Conception 

September 06, 2011Our Galaxy Might Hold Thousands of Ticking "Time Bombs"Type Ia supernovae
Artist's Conception 

August 31, 2011NASA's Chandra Finds Nearest Pair of Supermassive Black HolesNGC 3393
X-Ray 

August 31, 2011NASA's Chandra Finds Nearest Pair of Supermassive Black HolesNGC 3393
X-Ray 

August 11, 2011Alien World is Blacker than Coalexoplanet TrES-2b
Artist's Conception 

July 21, 2011Exoplanet Aurora: An Out-of-this-World SightAurora planet Animation
Artist's Conception 

July 21, 2011Exoplanet Aurora: An Out-of-this-World SightAurora planet
Artist's Conception 

July 13, 2011Evolved Stars Locked in Fatalistic Dancewhite dwarfs
Artist's Conception 

June 08, 2011New Supernova Remnant Lights UpSN 1987A
Optical Image 

May 25, 2011Astronomers Unveil Most Complete 3-D Map of Local Universe 2MASS Redshift Survey
Unknown 

May 25, 2011The Spitzer Photo Atlas of Galactic "Train Wrecks"NGC 470, NGC 474, NGC 3448, UGC 6016, NGC 735, and IC 1801
Infrared Image 

May 25, 2011The Spitzer Photo Atlas of Galactic "Train Wrecks"NGC 470 and NGC 474
Infrared Image 

May 25, 2011The Spitzer Photo Atlas of Galactic "Train Wrecks"NGC 3448 and UGC 6016
Infrared Image 

May 25, 2011The Spitzer Photo Atlas of Galactic "Train Wrecks"NGC 935 and IC 1801
Infrared Image 

May 23, 2011How to Learn a Star's True Agehypothetical exoplanet
Artist's Conception 

May 23, 2011How to Learn a Star's True AgeNGC 6811
Unknown 

May 23, 2011Kepler's Astounding Haul of Multiple-Planet Systemsplanetary candidates
Unknown 

May 23, 2011Kepler's Astounding Haul of Multiple-Planet Systemsplanetary systems
Unknown 

April 29, 2011Student's Prediction Points the Way to Hot, Dense Super-Earth55 Cancri
illustration 

April 29, 2011Student's Prediction Points the Way to Hot, Dense Super-EarthNight Sky
illustration 

April 13, 2011Far-Future Astronomers Could Still Deduce the Big Bangcosmic view a trillion years from now
Artist's Conception 

April 08, 2011Newly Merged Black Hole Eagerly Shreds StarsBlack Holes
Artist's Conception 

April 06, 2011Two Dying Stars Reborn as Onereborn star shown with a hypothetical world
Artist's Conception 

March 02, 2011Solar Mystery SolvedSun
Unknown 

February 14, 2011HARPS-N Instrument Will Help Confirm Kepler's Planet FindsKepler
instrument 

February 14, 2011HARPS-N Instrument Will Help Confirm Kepler's Planet FindsTelescopio Nazionale Galileo
instrument 

January 13, 2011The Best Way to Measure Dark Energy Just Got BetterType Ia supernova
Artist's Conception 

January 11, 2011New Telescope Exploring Solar System "Outback"Haumea
Artist's Conception 

January 11, 2011New Telescope Exploring Solar System "Outback"Pan-STARRS PS1 Observatory
instrument 

January 04, 2011Grant Williams Appointed New Director of MMT ObservatoryGrant Williams
person 

January 04, 2011Smithsonian Scientists "Fill the Gap," View Sun's Innermost CoronaSun
X-ray Image 

January 04, 2011Smithsonian Scientists "Fill the Gap," View Sun's Innermost CoronaSun
X-ray Image 

January 04, 2011Smithsonian Scientists "Fill the Gap," View Sun's Innermost CoronaSun
X-ray Image