nicer, an x-ray telescope, operating from the international space station

NICER (Neutron Star Interior Composition Explorer), an X-ray telescope, has been operating aboard the International Space Station since 2017. Its primary targets are neutron stars, which are the ultra-dense corpses of exploded stars. NICER's observations have helped astronomers narrow the range of models of how neutron stars are structured. [NASA]

Find out more in our radio program entitled NICER Astronomy.

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