The first thing to know about potential alien invaders is that they are no longer classified by the U.S. Government as unidentified flying objects. That sounds too scary. They are classified as ...

Michigan State University astrophysicists are closing in on one of space science’s biggest mysteries: where the galaxy’s most energetic particles come from. Their studies uncovered a pulsar wind ...

Dive into 25 cosmic mysteries science can't explain, from dark matter to dark energy. Explore the universe's most baffling ...

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 ...

LHAASO has uncovered that micro-quasars, black holes feeding on companion stars, are powerful PeV particle accelerators. Their jets produce ultra-high-energy gamma rays and protons that exceed ...

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According to a radiation weather expert, a stream of high-energy particles from a supernova explosion may have triggered a sudden loss of altitude on a passenger plane. In late October, a JetBlue ...

The first step on the Moon was one of humanity’s most exciting accomplishments. Now scientists are planning return trips – and dreaming of Mars beyond. Next year, Nasa’s Artemis II mission will send ...