http://www.popsci.com.au/space/cosm...-built-by-aliens-around-a-distant-star,410514 This star is one of many observed by Kepler. Its unusual as its showing non-periodic dimming - up to 22%! Astronomers say the variability is not from the star itself, but from something getting in the way. The dimming is too large and irregular to be due to transit of a planet. The leading theory is a massive cloud of comets or asteroids. Another theory is un-natural Dyson structures!