Milestone results released by the Large High Altitude Air Shower Observatory (LHAASO) on November 16 have solved a decades-old mystery about the cosmic ray energy spectrum—which shows a sharp decrease ...

How common are Earth-like planets in the universe? When I started working on supernova explosions, I never imagined that my ...

More than one million sources of energy are featured in the first X-ray images from the eROSITA space telescope. By Laura Baisas Published Feb 5, 2024 12:00 PM EST Get the Popular Science daily ...

The Earth's atmosphere has been blasted by the second strongest ultrahigh-energy cosmic ray (UHECR) to ever be observed. While its exact origins remain unknown, astrophysicists are pointing the finger ...

Some of the most energetic cosmic rays in the galaxy may come from a surprisingly small source. If Max Planck Institute for Astrophysics researcher Laura Olivera-Nieto and her colleagues are right, ...

The Roman telescope promises to provide a clearer picture of the large-scale structure of the universe and the forces shaping it, bringing scientists closer to understanding the cosmic puzzles of dark ...

Dark energy, the mysterious force that's driving the accelerating expansion of the universe, may not actually exist, scientists say. Their research has brought into question one of the cornerstones of ...

The surface detector array of the Telescope Array experiment, deployed by helicopter. Credit: Institute For Cosmic Ray Research, University Of Tokyo Around 30 years ago, scientists in Utah were ...

New supercomputer simulations hint that dark energy might be dynamic, not constant, subtly reshaping the Universe’s structure. The findings align with recent DESI observations, offering the strongest ...

Scientists from the Telescope Array Collaboration have detected an ultrahigh-energy cosmic ray, a discovery that’s challenging our current understanding of exotic cosmic phenomena and their origins.

A long-time question in astrophysics appears to finally be answered, thanks to a collection of large, high-tech water tanks on a mountainside in Mexico. The High-Altitude Water Cherenkov (HAWC) data ...

From silent, unexplained sounds resonating across the globe to the strange energy density of empty space, these 13 bizarre mysteries continue to baffle researchers in 2026, proving that the more we ...