The Solar System is far more diverse in size than it appears from Earth. From tiny rocky worlds to massive gas giants, each planet differs dramatically in scale. To truly understand these differences, ...

"These two planets have densities comparable to a nice blob of shaving foam fresh from the can." ...

A pair of sibling gas giants originally spotted by citizen scientists are so lightweight that their density resembles wispy cotton candy more than a standard atmosphere. The rare duo detailed today in ...

NASA’s Kepler mission has discovered the first Earth-size planets orbiting a sun-like star outside our solar system. The planets, called Kepler-20e and Kepler-20f, are too close to their star to be in ...

In a new study, a team of astrophysicists, including two researchers at CU Boulder, have discovered a small and rocky world orbiting a star far from Earth—similar to our own planet, perhaps, but much ...

International researchers are engaged in a complex study of two planets in deep space that appear to have an average density lower than that of candy floss. The planets orbiting star TOI-791, located ...

Strange ‘super-puff’ planets as big as Jupiter but lighter than cotton candy found - Rare planets are lightest known of their ...

New work from a team of Carnegie scientists (and one Carnegie alumnus) asked whether any gas giant planets could potentially orbit TRAPPIST-1 at distances greater than that of the star’s seven known ...

An analysis of the first three years of data from NASA’s Kepler mission, which already has discovered thousands of potential exoplanets, contains good news for those searching for habitable worlds ...

Our galaxy may have acquired some new real estate. NASA has discovered an Earth-size planet orbiting around a faraway star — and it could be habitable. Dubbed TOI 700 e, the exoplanet is the fourth ...