In this artist’s conception GJ 1132b circles a red dwarf star. Image credit: Dana Berry. GJ 1132b, an extrasolar planet about 1.2 times the size and 1.6 times the mass of the Earth, intrigued astronomers when it was discovered last year. Also known as Gliese 1132b, the planet orbits the red dwarf star GJ 1132, which is only 1/5 the size of our Sun and is cooler and much fainter than the Sun, emitting just 1/200th as much light. Located 39 light-years...
