It's well established that the universe is expanding, but there's serious disagreement among scientists over how fast it's happening.

Magnetic fields thread through galaxies, stretch across cosmic voids, and shape the behavior of charged particles over millions of light-years. Yet their origin remains one of the most stubborn ...

The cosmic microwave background (CMB) radiation is described as an imperceptible universal glow, representing the 13.8-billion-year-old remnant signature of the cosmos's primordial hot, dense origin.

Two scientists, Arno Penzias and Robert Wilson, discovered the cosmic microwave background in the mid-1960s while testing a large radio antenna for Bell Laboratories. They detected a constant signal ...

The European Space Agency's Planck satellite has been gathering data since its launch in 2009, slowly building up a map of the cosmic microwave background radiation -- a distant remnant of the Big ...