Abundance of Earth-like Exoplanets The universe has no shortage of similarities to Earth when it comes to celestial ...

Carl Sagan told us that there are more stars in the universe than there are grains of sand on all of the Earth's beaches. At the same time, there are more H 2 O molecules in just 10 drops of water ...

There's a lot hiding in the universe's dark corners ... car-size telescope 26 million miles (41.8 million kilometers) from Earth, they are alive with light—infrared light, or heat rays.