In the time since the first exoplanet was discovered in 1992, astronomers have detected more than 5,000 planets orbiting other stars.
Physicist Kent Irwin (first image,far left) and colleagues work with a delicate wire coil called an inductor for a prototype of Dark Matter Radio, their radio...
The U.S. Mint's Dr. Sally Ride American Women Quarter features a likeness of the late astronaut by artist Elana Hagler on its reverse and a portrait of George...