'Remarkable' cosmic explosion discovered in decades-old X-ray data
The "needle in the haystack" discovery of a powerful explosion from a mysterious unknown object outside our galaxy has ...
EurekAlert!5d
Mystery of 'remarkable' cosmic explosion that lay hidden for years
The researchers believe one explanation is that it could be the first X-ray burster ever discovered in ... releasing a huge amount of gamma rays in a very short time. If XRT 200515 is an X-ray ...