Receive Breaking News updates as they occur
By Will Dunham and Scott Malone WASHINGTON/CAMBRIDGE, Mass. (Reuters) - Scientists have for the first time detected gravitational waves, ripples in space and time hypothesized by Albert Einstein a century ago, in a landmark discovery announced on Thursday that opens a new window for studying the cosmos. The researchers said they detected gravitational waves coming from two distant black holes - extraordinarily dense objects whose existence also was foreseen by Einstein - that orbited one another, spiraled inward and smashed together. "Ladies and gentlemen, we have detected gravitational waves.