세 개의 태양을 가진 외계 행성 2016.04.03. 10:30 (This artist's concept of HD 1885 Ab, the first known planet to reside in a triple-star system, would have a similar sunset to KELT-4Ab. Both systems host a pair of stars distantly orbiting the planet-hosting single sun. Credit: NASA/JPL-Caltech) 태양은 혼자 존재하는 별이고 우리는 그 주변을 공전..