A hidden "Super-Earth" could exist right under our noses, and its gravity alone might be enough to send our entire solar ...

In a new study, astronomers detail observations of what could be the first known exosatellite - a natural object orbiting a ...

A new study suggests Earth formed almost entirely from material in the inner Solar System, challenging the idea that ...

Harvard University researchers recently examined carbonaceous chondrite meteorites using precise measurements of three ...

Thousands of planets have been discovered beyond our solar system, offering clues to where life might thrive and whether ...

Long before Earth had oceans, continents, or life, tiny grains of organic matter were drifting through the cold reaches of ...

Iron meteorites show the first bodies of the early solar system were 83% to 92% dry rock, with water arriving millions of ...

Radio signals detected at a planet beyond our Solar System ...

Scientists say the sun may have swallowed a super-Earth billions of years ago, leaving chemical fingerprints that could still ...

When the solar system first took up the task of building solid bodies—such as planets, moons and protoplanets—it basically ...

Cornell students have completed two experimental missions to test tiny light sails deployed in space. The results could help ...