The faraway exoplanet could help provide answers as to why there are hardly any planets with twice the diameter of Earth.

Our universe is racing toward its destruction as we speak. The end is not going to be especially pleasant, but when that end will happen is still a point of contention amongst cosmologists.

Far from light and plunged into months-long darkness, Antarctica's South Pole Telescope is one of the best places on Earth for observing the universe. Keith Vanderlinde / National Science ...

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 ...

Scientists using the James Webb Space Telescope have identified an ancient and faraway galaxy that provides evidence that an ...

The two keys to Edwin Hubble's breakthrough discovery were forged by others in the 1910s. The first key, the period-luminosity scale discovered by Henrietta Leavitt, allowed astronomers to ...