Detected in 2021, the Amaterasu particle ranks among the most energetic cosmic rays ever observed, carrying an estimated 244 ...

New Mexico’s Plains of San Agustin are otherworldly: Silence, sand and sharp plants reign on the valley floor. Knobbly volcanic rock rises above. Pronghorns’ legs and jackrabbits’ ears break up the ...

PHOENIX — Arizona is home to telescopes at Kitt Peak south of Tucson and Lowell Observatory in Flagstaff and now northern Arizona is a finalist to be home for a 40- telescope array. Meteor Crater and ...

October 16, 2024, Mountain View, CA - Scientists at the SETI Institute and partners from Penn State University used the Allen Telescope Array (ATA) to search for signs of alien technology in the ...

New analysis by Francesca Capel and Nadine Bourriche narrows possible sources of the Amaterasu cosmic ray, suggesting nearby galaxies like M82 rather than the Local Void.

TRAPPIST-1 is an ultra-cool dwarf with seven Earth-size planets orbiting it. (Photo digital Illustration by NASA/NASA via Getty Images) Scientists have just completed an extensive search for signs of ...

Officials canceled an energy project that put one of the world’s darkest astronomy sites at risk of increased light pollution and vibration.