If you can’t get enough of amateur astronomy clubs in the Bay Area, check out the Astronomical Society of the Pacific and the Astronomical Association of Northern California. The Astronomical Society of the Pacific, founded in the 19th century, has me…

European astronomers have discovered three Earth- like planets which circle a star and another two solar systems, along with several other small orbiting planets. The results strengthen the argument that the Earth (and possibly life) is not unique. Eac…

After using up the available hydrogen stars start converting helium to carbon and then carbon to heavier elements. These phases are relatively short and afterwards the stars die. How they die depends on their mass. Low mass stars like the Sun go quietl…