Light echo helps researchers map out parts of galaxy

Friday, July 3, 2015 - 01:30 in Astronomy & Space

Thousands of years before humans invented agriculture, a bright burst of X-rays left the dense neutron star Circinus X-1, located in the faint Southern constellation Circinus. A year and a half ago, those X-rays were detected by the International Space Station, prompting a team of researchers led by University of Wisconsin, Madison's Sebastian Heinz to investigate the source.

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