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The universe seems to be pervaded with a previously unknown, and still unexplain

Dark Energy May 21, 2010
In galaxy cluster CL0024+1654, each yellow dot is a galaxy.

Dark Matter May 21, 2010
Tiny variations in the "afterglow" of the Big Bang are shown as different colors

Age of the Universe May 21, 2010
Artist's concept of a possible Neptune-mass planet orbiting Rho 1 Cancri.

Finding Earth-Like Planets May 21, 2010
Rings encircle a young planet in this artist's concept.

Exoplanets May 21, 2010

Black Holes May 21, 2010

Radio Programs

New Names New names for a family of planets February 19, 2016

Planetary Pebbles Ingredients for a giant planet February 14, 2016

Featured Images

Artist's concept of a young Jupiter-like planet

Young Giant August 27, 2015
The system V664 Cassiopeia is creating a planetary nebula

Bread Crumbs July 23, 2015
Artist's concept of a moons orbiting a Jupiter-like exoplanet

Worlds of Worlds June 9, 2015

Ringfest May 20, 2015
Artist's concept of Scholz's Star passing close to the solar system

Former Neighbor May 7, 2015
Hubble Space Telescope image of a young star cluster

Anniversary Portrait April 23, 2015
G2 survives its swing around the black hole at the center of the Milky Way

Narrow Escape March 27, 2015
Artist's concept of MY Camelopardalis, a contact binary star system

Close Twins March 15, 2015
COBE view of the cosmic microwave background

Afterglow November 18, 2014
View of a newly forming planetary system around the young star HL Tauri

Planet Tracks November 6, 2014

Jetting Across the Universe August 12, 2014
Artist's concept of hot gas funneling toward black hole at center of Milky Way

Dark Center July 29, 2014
Simulation of the early universe

Tangled Web May 10, 2014
Diagram showing the layouts of several exoplanet systems

Going Farther April 30, 2014
Artist's concept of a range of recently discovered exoplanets

Planet Hunting April 28, 2014
Artist's concept of black hole binary star system in the galaxy M101

Brilliant Darkness January 16, 2014
Technicians replace equipment for HETDEX at McDonald Observatory

On (and Off) Track November 4, 2013
Artist's concept of extrasolar planet Kepler 78b, an Earth-sized world

Hot Rock October 31, 2013
The Planck space telescope and its view of the cosmic microwave background

Going Dark October 24, 2013
The Cat's Paw Nebula in submillimeter and near-infrared light

Star Maker September 27, 2013
Artist's concept of planet HAT-P7b

Hot Spot August 16, 2013
Hubble image of a galaxy cluster and the deduced location of its dark matter

Dark Universe August 5, 2013
Artist's concept of a blue exoplanet

Blue-Hot Planet July 13, 2013
Starbirth region on the edge of the Milky Way galaxy

Starbirth June 6, 2013
A black hole is created in the Large Hadron Collider, then quickly evaporates

Making a Black Hole February 26, 2013
Artist's concept of the Milky Way galaxy and its dark matter halo

Illuminating the Darkness February 9, 2013
Combined optical and X-ray view of two possible black holes in the galaxy IC 342

On the Job January 8, 2013
Artist's concept of the Gamma Cephei star system

Stellar Geometry September 4, 2012
A flare on the surface of the star HD 189733 blasts away the atmosphere of an or

Zapped! June 29, 2012
The remnants of two merged galaxies

Fast Exit June 18, 2012
Hubble Space Telescope view of galaxy ESO 243-49

Little Giant May 29, 2012
Simulation of a supermassive black hole disrupting a star

Messy Meal May 4, 2012
Artist's concept of the Kepler-35 system, with a giant planet orbiting two stars

Seeing Double April 4, 2012
Artist's concept of stars and a gas cloud near the Milky Way's central black hol

Snack Time March 29, 2012
Artist's concept of TW Hydra, a young star encircled by a disk of gas and dust

Messy Youngster April 25, 2011
New stars and the raw materials for more stars in the stellar nursery NGC 6729

Star Maker March 24, 2011
X-ray and radio image of galaxy M87

Close to the Monster March 10, 2011
Irregular galaxy Henize 2-10, which appears to contain a supermassive black hole

Small But Powerful March 8, 2011
Earth is in the middle of the Sun's habitable zone

In the Zone January 18, 2011
Hobby-Eberly Telescope at McDonald Observatory

Searching the Darkness October 15, 2010
Evaporating planet around the star HD209458

Puffy Planet August 26, 2010
M87 black hole

Busy Black Hole August 11, 2010

Cosmic Bullets July 20, 2010

Stellar Sculptors July 15, 2010
The Milky Way galaxy and the afterglow of the Big Bang make up this all-sky imag

A Little of Everything July 6, 2010