The earliest galaxies may have scrambled our reading of the Universe. A new study challenges the traditional interpretation ...

The greater the cosmic-ray energy, the greater its interaction cross-section, meaning it is more likely to interact with CMB ...

A combination of X-ray from NASA's Chandra observatory and radio data indicates that a galactic "fracture" was likely caused ...

These images feature zodiacal light — the faint, diffuse glow created by sunlight scattering off dust particles in orbit.