The new Space Environment In Situ Suite (SEISS) instrument onboard NOAA’s GOES-16 is working and successfully sending data back to Earth.A plot from SEISS data showed how fluxes of charged particles increased over a few minutes around the satellite on January 19, 2017. These particles are often associated with brilliant displays of aurora borealis at northern latitudes and australis at southern latitudes; however, they can pose a radiation hazard to astronauts and other satellites, and threaten radio communications.