Astronomers have captured the sharpest-ever images of infant planets forming around a distant ... which block unwanted ...

In a display of interstellar teamwork, NASA’s Hubble, Spitzer and Kepler space telescopes have discovered clear skies and water vapor in the atmosphere of a Neptune-sized planet orbiting a star ...

Astronomers have discovered clear skies and steamy water vapor on a planet outside our Solar System. The planet, known as HAT-P-11b, is about the size of Neptune, making it the smallest exoplanet ...