Cosmology, Robotic Spaceflight Hubble and Chandra discover dark matter is not as sticky as once thought
Cosmology, Galaxies Physicists offer a solution to the puzzle of the origin of matter in the universe
Cosmology, Exoplanets, Planets Swarms of Pluto-sized objects kick up dust round adolescent Sun-like star
Cosmology If the light from a galaxy traveled 13.3 billion years to reach Earth, does that mean the light left this galaxy when the universe was 500 million years old? Was the galaxy 13.3 billion light-years away from Earth then?
