Explore the vastness of the Solar System in this video, which accurately showcases the relative sizes of the planets and ...

This illustration shows the seven Earth-size planets of TRAPPIST-1, an exoplanet system about 39 light-years away. The image shows the relative sizes of planets b through h, from left to right, but ...

It is well-known that the light curve of a transiting planet contains information about the planet’s orbital period and size relative to the host star. More recently, it has been demonstrated that a ...

On Feb. 22, 2017, scientists announced the discovery of TRAPPIST-1, an alien solar system with at least seven Earth-sized planets. See pictures of the discovery here. Read the Full Story. Artist's ...

A fantastic map from webcomic artist Randall Munroe shows the relative surface areas of all the rocky planets and moons in the solar system as though they were continents branching off from the oceans ...