Our local universe’s expansion rate doesn’t add up, astronomers find
A difference of a few kilometers per second might not sound like much. In cosmology, it has become…
Astronomers discover a mysterious duality in dark matter
A dark matter signal that appears in one place but not another might look like a contradiction. This…
Astronomers discovered the most primitive star ever
A dim red giant just out of reach of the Milky Way is providing astronomers with an incredibly…
Pristine star reveals the dawn of stars and galaxies in the universe
The spectrum looked almost empty. That was the clue. In the faint light from a red giant star…
Gravitational waves may be responsible for dark matter in the universe
Dark matter is thought to exist everywhere, wrapping around galaxies and helping to shape the largest things in…
New Theory Says We’ve Been Overcomplicating the Big Bang
One of the greatest unsolved problems in physics concerns unifying quantum mechanics and general relativity—two equally successful theories…
Groundbreaking new theory rewrites quantum view of the Big Bang
A Gravity Theory That Could Rewrite the Universe’s First Moments The first fraction of a second after the…
New Research Says the Big Bang May Be Linked to a “Deeper Theory of Gravity,” Challenging Past Ideas
Researchers say a new theory tackling the Big Bang could reshape how physicists think about the earliest moments…
Astrophysicists are close to proving the existence of primordial black holes
On November 12, 2025, a ripple passed through the fabric of spacetime and triggered alarms at three gravitational-wave…
Expanding catalog of black hole collisions is rewriting the history of the universe
Between May 2023 and January 2024, a global network of gravitational-wave detectors picked up 128 new cosmic signals,…
The haziest planet we’ve ever seen won’t give up its secrets
Something is hiding inside Kepler-51d, and it’s doing a remarkably good job of it. About 2,615 light-years away…
Scientists are rethinking how young galaxies formed their magnetic fields
Magnetic fields that stretch across thousands of light-years should take a very long time to organize. Standard dynamo…