Presentation #104.02 in the session HALOSAT.
HaloSat was the first CubeSat competitively funded by NASA’s Astrophysics Division and performed a two-year, all-sky survey in the soft X-ray band. HaloSat’s primary goal was to measure line emission from highly ionized oxygen within the halo of the Milky Way. However, it has also been used to study extended soft X-ray sources such as the North Polar Spur, the Cygnus superbubble, and the Orion-Eridanus star forming region. HaloSat data have also been used to search for 3.5 keV line emission from a putative sterile neutrino. We review some of the key results from HaloSat.