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…
Astronomers spot ‘jellyfish galaxy’ torn apart 8.5 billion years ago
Long strands of glowing gas stretch behind a distant galaxy, dotted with pockets of newborn stars. The shape…
Dark matter may consist of particles with different masses
Dark matter keeps getting blamed for the universe’s big patterns while staying stubbornly out of reach. You cannot…
The Milky Way’s core may be dense dark matter, not a black hole
For decades, scientists have theorized that the Milky Way Galaxy’s supermassive black hole, known as Sagittarius A* (Sgr…
What are GRBs? A NASA researcher explains these strange space signals
There are those who like to point out that we know more about space than the ocean ,…