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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

Switching On Switching on the heart of a galaxy December 18, 2015

Moon and Aldebaran Patiently watching the bull’s eye October 29, 2015

Tau Ceti De-populating a popular star system October 13, 2015

Hot Planet A world you wouldn’t want to visit October 12, 2015

51 Pegasi A puffy planet gets some attention October 11, 2015

Moon and Companions Bright companions for the Moon October 6, 2015

Rare Gems Yellow gems from the water bearer October 2, 2015

More Cosmic Background Taking the universe’s temperature October 1, 2015

Cosmic Background The crackle of the Big Bang September 30, 2015

Mirach Stars at opposite ends of the scale September 28, 2015

Dabih A dizzying system of stars September 22, 2015

Luminous Red Novae One star born from two September 2, 2015

Hunting Planets IV Patiently looking for planets August 28, 2015

Hunting Planets III Looking for big, cold planets August 27, 2015

Hunting Planets II More nights hunting for planets August 26, 2015

Hunting Planets Getting ready to hunt planets August 25, 2015

Far, Far Away Mapping the distance to the galactic center August 13, 2015

Making a Magnetar Making a powerful magnet August 5, 2015

Delta Cephei A surprise from a well-known star August 2, 2015

Delta Cygni Spreading out a stellar tri