If you're looking to impress your friends with some rare space facts, these gems will serve you well. The Largest Known Star ...

Tim Limmer has been gazing at the stars with a telescope since he was a child growing up in St. Louis. Now, he not only does ...

Using an observatory under construction deep beneath the Mediterranean Sea near Sicily, scientists have detected a ghostly ...

"History shows us that whenever you do open a new 'energy window,' you never really know what you're going to find. It's completely unexplored." ...

Undersea detectors anchored deep in the Mediterranean Sea found an ultra-high-energy neutrino, a particle that opens a new window onto the cosmos.

Just as modern telescopes reveal the hidden structure of nebulae and star clusters, understanding the physics behind twilight ...

Euclid telescope has located a rare hoop of light called an "Einstein ring" in a nearby elliptical galaxy. Though the galaxy has been on humans' radar for 140 years, its halo is new—and it has a lot ...

With a length of 428 megaparsecs, or around 1.39 billion light-years, the superstructure is the biggest ever spotted.

The first Einstein ring was discovered in 1987, and since then, several more have been discovered. However, it remains ...

A neutrino with 30 times more energy than any previously seen on Earth was detected by an unfinished observatory at the ...

"For the first time, we could trace the boundary between the gas residing in galaxies and the material contained within the ...

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