TSIS-2 / SSTP NRHO Demo Sources Sought

es for two separate potential missions: � Total Solar Irradiance Spectral Solar Irradiance 2 (TSIS-2). The TSIS-2 mission will provide absolute measurements of the total solar irradiance (TSI) and spectral solar irradiance (SSI), necessary for accurate scientific models of climate change and solar v

ariability. � Small Spacecraft Technology Program Near Rectilinear Halo Orbits (SSTP NRHO Demo), which is a 12U spacecraft requiring a Trans Lunar Injection orbit to support NASA's mission to the moon. NASA/KSC is seeking information regard