The newly observed "X-ray echo" -- the largest and brightest of its type ever caught on camera -- has allowed researchers to pin down the location of the neutron star Circinus X-1, which lies 30,700 light-years from Earth.
The newly observed "X-ray echo" -- the largest and brightest of its type ever caught on camera -- has allowed researchers to pin down the location of the neutron star Circinus X-1, which lies 30,700 light-years from Earth.
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