A double star system has been flipping between two alter egos, according to observations with NASA's Chandra X-ray Observatory and the NSF's Karl F. Jansky Very Large Array (VLA). This is a rare ...
Scientists have discovered a mysterious flash of X-rays using NASA’s Chandra X-ray Observatory, in the deepest X-ray image ever obtained. The X-ray source is located in a region of the sky known as ...
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