"As the large and bright discs are the easiest to observe, our previous view of the birth site of planets was biased." ...

A century ago, Edwin Hubble revolutionized our understanding of the universe by proving that the Milky Way is just one of many galaxies in an ever-expanding cosmos. This breakthrough led to the ...

Our sun is one of a class of stars known as “solar-type” stars; these comprise only about 7% of the Milky Way galaxy. Most stars, however, are considerably smaller than the sun. These are ...

The trailblazing Harvard scientist, who documented the dominance of hydrogen and helium in stars, is still inspiring ...

The trouble is that these faraway planets are far too tiny to be seen next to the brilliance of their stars, even with our most ... mean a much larger degree of confidence than any previous ...

Earth has a nearly circular orbit, but some planets outside our ... much larger than the Earth. "It's remarkable what we've been able to learn about the orbits of planets around other stars ...

A new classification scheme may help us better understand planet formation — including the history of our own family of worlds.

Young, close-orbiting exoplanets known as sub-Neptunes may form farther from their stars and migrate inward or lose their ...

Only the three stars that make up the Alpha Centauri system lie closer to us. The planets newly discovered around Barnard’s Star are much too faint to be seen directly, so how were they found? The ...