Kepler data may hold a Neptune-sized surprise, our first exomoon

Enlarge (credit: NASA/JPL-Caltech) One of the most important things we’ve learned from the Kepler mission is that, in many ways, our Solar System isn’t unique. Lots of stars have planets, many have multiple planets, and the list of planets includes many with sizes and densities similar to our eight planets. But there are lots of […]

Scientists may have found a Neptune-sized alien moon

Astronomers have found an abundance of exoplanets, but no exomoons. Despite ongoing efforts, the tiny celestial bodies have just been too elusive to detect using modern technology. However, researchers might have just hit paydirt. They’ve used Kepler Space Telescope data to discover signs of what looks like a Neptune-sized moon orbiting a planet in the […]

Astronomers find water in the atmosphere of a warm, Neptune-sized planet

Enlarge / An artist’s conception of planet HAT-P-26b, along with the outlines of the two telescopes that imaged it. (credit: NASA/GSFC) Scientists are announcing a rare look into the atmosphere of a distant exoplanet more than 400 light years away. The planet is roughly Neptune-sized and orbits close to its host star. And now we know […]