Scientists have been trying to understand cosmic rays—tiny, fast-moving particles that stream through space - for years.

Around 41,000 years ago, Earth’s magnetic field underwent a chaotic shift that temporarily weakened the planet’s natural protection ...

The ultimate purpose of PUNCH is to use its four instruments — three wide-field imagers (WFI) and a near-field imager (NFI) — ...

Additionally, ancient humans may have ramped up their use of ochre. This naturally occurring pigment is composed of iron ...

For most of the sun, the temperature drops as you move away from the center. This makes sense, since it's nuclear fusion in the core that heats the sun. So you would expect the corona to be cooler ...