At the center of our galaxy is the supermassive black hole Sagittarius A*. Though it has a history of flickering, it has never glowed like it did in April and May, new research tells us. Twice, both times over the course of four nights, the light around its core glowed at “unprecedented” levels—so much that some astronomers believed they’d discovered a star. Minutes later, the bright light disappeared. According to astronomers, the incidents can be attributed to “an eruption of the black hole unleashing bright radiation.” Though this conclusion is largely irrefutable, there’s no explanation for why it occurred in the first place or what it could mean to our galaxy’s existence. Read more at CNN.