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…
Astronomers discover the first neutron star–black hole merger with an eccentric orbit
In 2020, astronomers discovered a violent cosmic event that has led them to rethink how extreme pairs of…
Ancient Milky Way stars challenge the age of the universe and the Hubble tension
The oldest stars in the Milky Way are forcing a fresh look at one of cosmology’s biggest arguments.…
Asteroid Ryugu fragments carry a magnetic record from the birth of the solar system
A small, round piece of asteroid Ryugu (sample #91), called “S-lunar,” contains tiny particles (less than 1 mm)…
Scientists develop a new way to measure the expansion rate of the universe
For years, cosmologists have argued over a simple question with an awkward answer: How fast is the universe…
What a rare lensed supernova could mean for measuring cosmic expansion
A burst of light in the deep sky is doing something it should not be able to do.…
Dark matter and neutrinos are linked and interact with each other
A quiet shift in the numbers behind the universe’s growth is pushing scientists toward a bold possibility. Two…
PHD student built the first-ever 3D map of Uranus’s upper atmosphere
Uranus does not behave like an ordinary planet. Its magnetic field tilts by nearly 60 degrees and sits…
Nearly invisible galaxy may be built mostly of dark matter, Hubble finds
A tight clump of four star clusters sits in the Perseus galaxy cluster, and at first glance it…