Tag Archives: brightness

Just when you thought it was safe to go back to ignoring Betelgeuse, the red giant star began to reappear. After its first round of dimming, and then clear, Betelgeuse has now once again started dimming again. Moreover, this new dimming is consistent with the current cycle of Betelgeuse variation …

Black holes don’t shine; in fact, they are famous for doing the opposite. But if they are actively devouring material from the space around them, that material can burn like a trillion X-ray suns. And for the first time, astronomers have now seen that mysteriously extinguished fire, before gradually returning …