Space Exploration; Black Holes; Space Telescopes; NASA; Satellites; Dark Matter; Cosmic Rays; Extrasolar Planets

For more than a century and a half, astronomers have been captivated by the distant galaxy OJ 287, located about five billion light years from Earth. Its puzzling variations in brightness have long hinted that two enormous black holes may be orbiting and merging at its center. Now, an internationalContinue Reading