The mission — known as Payload for Ultrahigh Energy Observations, or PUEO — lifted off Dec. 20, 2025, from NASA’s launch ...

What’s going on with this silent threat that can stealthily damage your body in ways that can take years to reveal themselves ...

Researchers have identified a newly recognized type of extremely energetic particles located in the Sun’s upper atmosphere, revealing a phenomenon that had not been detected before. Solar scientists r ...

By tracing solar flare gamma rays, scientists gain new insight into particle behavior that shapes space weather forecasts.

You can't see, feel, hear, taste or smell them, but tiny particles from space are constantly raining down on us.

Solar physicists say they have found a key source of intense gamma rays unleashed when Earth's nearest star produces its most ...

"WIMPs are still the leading candidate for dark matter, but billions of dollars of experiments have been done, only getting ...

One of the biggest mysteries of the universe is why its expansion seems to be speeding up. Physicists have attributed it to a strange force called dark energy, but exactly how it works is largely ...

Illustration of an array of ground-based detectors to characterize a cosmic ray shower. When high-energy cosmic particles strike the atmosphere, they produce a cascade of particles. By building a ...