This low-frequency background hum of gravitational waves in our universe was originally attributed to a change, or a "phase transition," that occurred shortly after the Big Bang.New research ...

Understanding how the universe transitioned from darkness to the emergence of stars marks a critical shift known as Cosmic ...

Scientists are peering into the universe's mysterious Cosmic Dawn using the faint whispers of hydrogen radio waves emitted ...

U.S. physicists Arno Penzias and Robert Wilson accidentally discovered this phenomenon, a faint afterglow from 380,000 years ...

Telescopes around the world have spotted a monster radio jet streaming from a quasar dating back to the first 1 billion years of the universe.

Mysterious radio signals detected emanating from Antarctica's ice have left particle physicists baffled. The pulses were ...

SpaceX’s Starlink satellites were known to interfere with visible light astronomical observations, but many have now been ...

Astronomers have finally tracked down missing "ordinary" matter, which they discovered hiding as gas spread out in the vast expanses between galaxies.

Most scientists think that everything that we know and experience began with the Big Bang, ... such as X-rays, infrared light, ultraviolet light, radio waves and microwaves.

And today, we end the series with a bang - the Big Bang theory for how our universe began - you know, the one Stephen Hawking popularized. SUMMERS: All summer long, NPR's Short Wave podcast has ...

Scientists previously had determined the total amount of ordinary matter using a calculation involving light observed that ...

U.S. physicists Arno Penzias and Robert Wilson accidentally discovered this phenomenon, a faint afterglow from 380,000 years after the Big Bang, using a radio telescope in 1965. Related Stories ...