How confusing inevitability with reality built decades of paradox. What if general relativity never actually tells us that ...

New observations suggest that the relationship between light emitted by quasars has changed over cosmic time, hinting that ...

How could we finally observe dark matter in an original way, this invisible substance that makes up the greatest part of the ...

In a glimpse of the early universe, astronomers have observed a galaxy as it appeared just 800 million years after the Big ...

Black hole light echoes are an extreme form of gravitational lensing. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. To measure the masses and ...

Every galaxy has a supermassive black hole at its center, much like every egg has a yolk. But sometimes, hens lay eggs with two yolks. In a similar way, astrophysicists like us who study supermassive ...

Photons are indeed massless, but they still travel through our universe. You can picture the fabric of the cosmos as a sort of grid — one that is four-dimensional and incorporates not only the three ...

A mysterious ring of light is thought to surround every black hole, and Alex Lupsasca wants to glimpse one for the first time. The tendril-thin halo, called a photon ring, has the power to reveal ...

NASA’s James Webb Space Telescope (JWST) is the most advanced telescope ever constructed, designed for operation in deep space, approximately 1.5 million miles from Earth. The orbital observatory ...

New theoretical research suggests primordial black holes could one day help researchers locate invisible dark matter. When you purchase through links on our site, we may earn an affiliate commission.

On what might have been the proudest day of Jack Burns’s long career in astronomy, he was sitting on a beach. Orbital dynamics and launch schedules wait for no one, and Burns couldn’t move his ...

"The Milky Way would be a little dot in these two giant eruptions." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Astronomers have spotted the ...