After more than a century of intensive research, we know a lot about cosmic rays. But many mysteries remain. We do know: What they’re made of. About 90% of them are hydrogen, 9% are helium, and 1% are ...

A "cosmic CT scan" performed by scientists using two very different cosmic surveys has revealed the cosmos is less clumpy and ...

Ultra-high energy cosmic rays are orders of magnitude more powerful than the sun's energetic particles: They can reach up to 10 20 electron volts, whereas particles from the sun can reach up to 10 ...

in combination with Year 1 data from the Dark Energy Spectroscopic Instrument (DESI) to reach these conclusions. This powerful combination of data allowed the researchers to layer cosmic time ...

Instead, the answer may lie in how time itself flows differently across the cosmic landscape. While not definitively disproving the existence of dark energy, the research presents compelling ...