2.7.2 spase://SMWG/Observatory/Carruthers SMWG Carruthers The Carruthers Geocorona Observatory 2026-08-14T13:38:48 The Carruthers observatory studies Earth’s geocorona, the ultraviolet glow emitted by Earth's exosphere, our planets outermost atmospheric layer. Carruthers operates from a halo orbit about the first Earth-Sun Lagrange point, with narrow and wide field channels to observe geocoronal emissions of atomic hydrogen in order to retrieve altitude profiles of exospheric hydrogen density. spase://SMWG/Person/Thomas.Immel ProjectScientist spase://SMWG/Person/Lara.Waldrop PrincipalInvestigator NASA Carruthers Homepage https://science.nasa.gov/mission/carruthers-geocorona-observatory/ NASA Website for Carruthers Mission Earth.NearSurface September 24, 2025