THREE’S A CROWD A frozen, rocky planet orbits one of a pair of faint red stars (center and right), roughly 3,300 light-years away, as seen in an artist’s illustration.
Cheongho Han, Chungbuk National University, Republic of Korea
Gliese 581g, the planet in the foreground of this illustration, may not exist. A new study asserts that the star Gliese 581 (red) hosts only the three other depicted planets, all of which are too hot to sustain life.
SUN FLOWER A starshade accompanying a proposed planet-hunting telescope, shown in an illustration, would block starlight and make it easier for the telescope to glimpse any planets orbiting distant stars.