Dark matter is one of nature's most confounding mysteries. It keeps particle physicists up at night and cosmologists glued to ...

Astronomers who examined the sound waves from the Big Bang say that the Earth and the entire Milky Way could be trapped in a ...

One of the main objectives of the Hubble Space Telescope, launched in 1990, was to measure the size and age of the Universe, ...

New simulations suggest that dozens of ultra-faint “ghost” galaxies may be orbiting the Milky Way, hidden from current ...