Why is the universe expanding at an ever-increasing rate? This is one of the most exciting yet unresolved questions in modern ...

Astrophysicist Neil deGrasse Tyson joins Natasha Verma to unlock big cosmic questions with wit and clarity: Have aliens ...

If the universe is expanding, then what is it expanding into, and what is it expanding from? Where's the edge of the universe ...

Most explanations rely on "dark energy" to explain the Universe's accelerating expansion rate, but a new study takes a different path.

The new data seem to indicate that the cosmological constant is negative, and that the universe will end in a Big Crunch,” ...

The Universe might not exist forever. New observations by physicists indicate that it will one day reach its maximum size ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

Scientists figured out that the universe is billions of years old — after years of reading ancient rocks and dying stars, and ...

For two decades, scientists believed the cosmological constant, known as λ (lambda), was positive. That meant the Universe ...

There was, you might say, a disturbance in the Force. Long, long ago, when the universe was only about 100,000 years old — a buzzing, expanding mass of particles and radiation — a strange new energy ...