This speck of primeval stardust may hold clues about the origin of the solar system.
Big Bang theory is the leading explanation for how our universe began. According to the theory, the entire universe began as a tiny singularity that went through an explosive expansion 13.8 billion years ago, gradually expanding into the cosmos we see today. Today, astronomers can detect an "echo" from the Big Bang in the cosmic microwave background, a phenomenon that can be detected with radio telescopes. Big Bang Theory is also the name of a popular CBS sitcom about scientists, where several real-life scientists and astronauts have appeared.
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.
We now have a better idea of how big black holes were born in the early universe, a new study reports.
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.
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.
Astronomers think they have identified a star they believe to be about 13.5 billion years old, which would place its birth just after the Big Bang — and it's surprisingly close to us.
In 1980, physicist Alan Guth proposed a radical extension to the standard Big Bang model of the history of the universe, proposing a transformative event called cosmic inflation.