GRB 250702B is 'the longest gamma-ray burst that astronomers have ever observed,' according to NOIRLab. See imagery of the ...

Deep space bursts of energy commonly happen because of either supernovae or kilonovae. But in 2025, something else triggered ...

The speed of light remains one of physics’ firmest assumptions, but scientists still test whether it ever shifts under ...

In 2025, astronomers detected a blast from space. Now they’re uncovering the strange processes behind the exceptional ...

A new study published in Physical Review Letters by the IceCube Collaboration reports evidence that the energy spectrum of ...

Ultrahigh energy cosmic rays may be made of nuclei heavier than iron, according to a May 2026 Penn State study in Physical ...

NASA is working hard to predict where in Earth orbit its aging Swift space telescope will be this fall, so a private spacecraft can boost its altitude.

NASA's decision to halt most science operations on its Swift observatory has paid off. Estimates now put the spacecraft's ...

Scientists have discovered that ultraheavy atomic nuclei could explain some of the highest-energy cosmic rays ever observed.

On the edge of the main road connecting Denver to Boulder, a space startup’s manufacturing facility in Broomfield has been ...

We should all strive to be curious, open-minded, and seek to get as close to the objective truth as possible. However, this ...

NASA's Fermi Gamma-ray spacecraft has observed a super-bright, supercharged supernova explosion powered up by the creation of ...