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Scientist Corey Gray and his mother, Sharon Yellowfly, are pictured at one of the two massive detectors that make up the Laser Interferometer Gravitational-Wave Observatory. One facility, where Gray works, is in Washington state, and the other is in Louisiana.
Courtesy of Russell Barber
The Laser Interferometer Gravitational-Wave Observatory is made up of two detectors, this one in Livingston, La., and one near Hanford, Wash. The detectors use giant arms in the shape of an "L" to measure tiny ripples in the fabric of the universe.
The Crew Dragon landed safely in the Atlantic Ocean on Friday morning, with a splashdown at 8:45 a.m. ET, as scheduled. The uncrewed craft had been on a test flight in which it docked with the International Space Station.
NASA TV Screenshot by NPR
In this photo provided by NASA, the SpaceX Crew Dragon is pictured just beside the International Space Station. SpaceX's new crew capsule arrived at the station on Sunday in a remarkable moment for commercial space exploration.
NASA via AP