Skywatchers have noticed something "bizarre" in the data from the planet-hunting Kepler telescope. Located 1,480 light-years away, a star named KIC 8462852 has something big circling around it, and it's not a planet.
Usually when a planet passes in front of a star, it dims the star's light for a few hours or days, then disappears and returns again after completing its yearly revolution around its sun. But this particular star's light has dimmed for up to 80 days at a time, and at irregular intervals. That's no planet.
http://www.popsci.com/alien-megastructu ... nvestigate
