Big Bang Theory

Using red giant stars, scientists calculate new universe expansion rate.

This speck of primeval stardust may hold clues about the origin of the solar system.

The universe is expanding faster than expected, suggesting that astronomers may have to incorporate some new physics into their theories of how the cosmos works.

To see if there was a universe before the Big Bang and understand how the cosmos evolved after it began, researchers suggest looking for the influence of particles that acted like clocks.

Come 2023, NASA will have a new eye tracking the heavens and looking to solve some of the greatest scientific mysteries we know of.

What does a star feel like? A team of scientists put astronomy on a vibrating sound stage in order to tackle such questions.

The Hubble Space Telescope has discovered a dwarf galaxy in our own cosmic backyard, a mere 30 million light-years from the Milky Way.

Dark energy is even more mysterious than astronomers had thought, a new study suggests.

Is super asymmetry a thing? And do big physicists really travel economy class?

We now have a better idea of how big black holes were born in the early universe, a new study reports.

Before the Big Bang, time may have run in reverse.

Back in the first moment of the universe, everything was hot and dense and in perfect balance. A new quantum experiment aims to show how that changed.

The emptiest space in the universe is full of gas.

If you're a fan of really big numbers that don't actually tell you much about the world, Clemson University astrophysicist Marco Ajello has a great one for you: 4 x 10^84.

The most luminous galaxy known appears to have devoured three smaller galaxies at the same time, revealing details about why it shone so brightly.