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 ...

radio waves and microwaves. They have shorter or longer wavelengths than visible light. After the Big Bang, the whole Universe was flooded with incredibly bright light. As the Universe has ...

At double the width of our Milky Way galaxy, this jet of radio waves is the biggest ever detected ... microwave background left over from the Big Bang. “It’s only because this object is ...

In the Ophiuchus galaxy cluster, astronomers spotted the largest explosion in the universe consisting of energy equal to a ...