Astronomers Spot Mysterious System 1600 Light-Years Away

There is a peculiar system 1,600 light-years from our solar system. It is composed of two brown dwarfs, massive objects too big to be planets and too small to fuse hydrogen and become stars. But that is not the strange part: Scientists have now discovered a Venus-sized planet around the smaller brown dwarf. 

Dark-matter galaxy detected: hidden dwarf lurks nearby?

Galaxy X: An entire galaxy—made mainly of dark matter—may be lurking just outside our own, scientists say.