Stars

Energy Secretary Jennifer Granholm announced a major scientific breakthrough Tuesday in the decades-long quest to harness fusion, the energy that powers the sun and stars. Researchers at the Lawrence Livermore National Laboratory in California for the first time produced more energy in a fusion reaction than was used to ignite it, something called net energy gain, the Energy Department said. The achievement will pave the way for advancements in national defense and the future of clean power, Granholm and other officials said. This is a landmark achievement for the researchers and staff at the National Ignition Facility who have dedicated their careers to seeing fusion ignition become a reality, and this milestone will undoubtedly spark even more discovery, Granholm said at a news conference in Washington. "The fusion breakthrough "will go down in the history books,'' she said. White House science adviser Arati Prabhakar, appearing with Granholm, called the fusion ignition a tremen

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Astronomers admit they don't have an explanation yet for a beam of radio waves that apparently came from the direction of the star Proxima Centauri

NASA's Chandra X-Ray Observatory was at the forefront of the many observatories working on the neutron star collision