For decades, scientists have known that ordinary matter — everything made of atoms — accounts for just 15% of the universe’s ...

For decades, scientists have been puzzled by the missing mass in the universe. While we know that about 85% of the universe is made up of dark matter, the remaining 15% is made up of normal (baryonic) ...

Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe today have come up embarrassingly short ...

A new analysis of astronomical data suggests unknown physics is at work assisting dark energy in acting almost as ...

In recent years, one of the most troubling puzzles in astrophysics has grown more urgent. Scientists have realized that the ...

The collaboration measured the polarization of light from the cosmic microwave background (CMB ... other galaxies, and galaxy clusters. In a sense, it's tracing the evolution of the universe ...

A powerful “Cosmic Tornado” has received a high-definition glow-up thanks to NASA’s James Webb Space Telescope (JWST). The new look at Herbig-Haro 49/50 (HH 49/50) released today also answers a ...

The Webb Space Telescope has captured a plume of gas and dust streaming from a star in the making, with a spiral galaxy as a ...

The rare cosmic phenomenon, called an Einstein ring, occurs when massive objects can bend light due to their gravitational ...

A newborn star, a blast of glowing gas, and a distant spiral galaxy — all caught in one stunning snapshot by the James Webb Space Telescope. This rare cosmic overlap forms a swirling, colorful image ...

Leading this quest is the Dark Energy Spectroscopic Instrument (DESI), a global collaboration that maps the universe's 3D large-scale structure by measuring redshifts of tens of millions of celestial ...