Cosmology

A dozen quasars in the early universe appear to have shut down in just a few years, baffling astronomers

Scientists photograph a gas-giant exoplanet forming around a young star that lies about 450 light-years from Earth

Astronomers get closer to an explanation for the unexpected abundance of gamma rays at the core of our galaxy

The recently discovered small galaxy Leo P contains only about a hundred-thousandth as many stars as the Milky Way, but it's bucking the small galaxy trend by continuing to make new ones

Scientists will use wonky orbit to test Einstein’s theories

Asteroid TB145 will make a near pass of our planet, offering astronomers a chance for an up-close radar view of its surface

The presence of the gas could have implications for theories of the early solar system

The gaps between the universe’s filaments of dark matter and galaxies are far from static

The next week or two Uranus, Mercury, Jupiter and Mars are making notable appearances in the night sky

Astronomers have detected faint light that dates from shortly after the big bang

The 2015 Nobel Prize in Physics goes to Takaaki Kajita and Arthur B. McDonald for the discovery of neutrino oscillations, which shows that neutrinos have mass

Takaaki Kajita and Arthur B. McDonald share the 2015 award for the discovery that neutrino particles can change “flavor”—and, unexpectedly, have mass