The final antenna in the massive ALMA array is now in place on the Chajnantor Plateau in Chile.
CalTech’s Cosmic Web Imager spots elusive “dim matter” that interconnects our Universe, along with a galaxy-in-the-making that's three times larger than our own.
The Arecibo Observatory in Puerto Rico has picked up mysterious bursts of radio signals that could originate billions and billions of light-years away from Earth.
California’s Automated Planet Finder telescope automatically scans the skies each night, searching for new exoplanets.
An enormous composite image of our galaxy reveals its size, shape, number of stars, and new mysteries.
A giant space flower is what's going to let us take pictures of alien planets.
ESO’s Very Large Telescope spotted the largest yellow star we've ever seen: 1,300 times larger than our Sun.
Nobody has better satellite images than the U.S. government, and the latest piece of space hardware will cover every foot of the globe every two days.
The world's largest and most powerful infrared telescope, the EELT, will be equipped with lasers to hunt for Earth-sized planets and alien life.
If we fire enough lasers at the Milky Way, eventually we'll blow it up, right?