If you think a galaxy is big, compare it to the size of the universe: it's just a tiny dot which, together with a huge number ...

“There’s a lot of meanings for ‘small,’” says Janet Conrad, a particle physicist at the Massachusetts Institute of Technology ...

"It is larger than the size of most anything to which it might be compared." The universe's largest structure, the Hercules-Corona Borealis Great Wall, was already a challenge to explain with models ...

The theorists predict that the beginning of the end will be in about 10 billion years — less than the present age of the universe. Tantalizing evidence hints that dark energy might be evolving, ...

Astronomers have discovered what could be the biggest known black hole in the universe. The gargantuan black hole, around 36 billion times more massive than our sun, is close to the theoretical upper ...

Deep in the first moments of the Big Bang, the entire cosmos shook and rumbled. Those quakes still reverberate to the present day. It will take the most sensitive instruments ever imagined to reveal ...