Using NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton satellite, astronomers identified a possible remnant of ancient stellar explosion just a few dozen light-years from Sagittarius A*, a supermassive black hole at the center of our Milky Way Galaxy.

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I discuss the distinction between operational science, which relies on repeatable experiments, and historical science, particularly cosmology. While acknowledging the contributions of renowned scientists, I argue that cosmology lacks the capacity for experimental verification and is thus not true science, but science falsely so-called.