  We present observations of a powerful solar eruption, accompanied by an X8.2
solar flare, from NOAA Active Region 12673 on 2017 September 10 by the Solar
Ultraviolet Imager (SUVI) on the GOES-16 spacecraft. SUVI is noteworthy for its
relatively large field of view, which allows it to image solar phenomena to
heights approaching 2 solar radii. These observations include the detection of
an apparent current sheet associated with magnetic reconnection in the wake of
the eruption and evidence of an extreme-ultraviolet wave at some of the largest
heights ever reported. We discuss the acceleration of the nascent coronal mass
ejection to approximately 2000 km/s at about 1.5 solar radii. We compare these
observations with models of eruptions and eruption-related phenomena. We also
describe the SUVI data and discuss how the scientific community can access SUVI
observations of the event.
