Nick Hague and Suni Williams spent six hours working on NICER, AMS and other equipment outside the International Space ...

Suni Williams wasn’t planning to participate in a spacewalk when she arrived aboard the International Space Station last year ... called NICER (Neutron star Interior Composition Explorer ...

NICER (short for "Neutron Star Interior Composition Explorer") launched to the station in June 2017 aboard ... outside the orbiting lab. Breaking space news, the latest updates on rocket launches ...

The NASA astronauts used the opportunity to carry out repairs to things such as a space station gyroscope, the NICER (Neutron star Interior Composition Explorer) X-ray telescope and to prepare a ...