This HaloSat illustration shows the space telescope in shades of blue. The body of the spacecraft is a rectangle with three circles along the long, narrow side. One solar panel extends from the spacecraft body.
December 20, 2022
Historical DateDecember 20, 2022
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An illustration of the HaloSat spacecraft. The colors depicted in this illustration are for artistic purposes only.

HaloSat was a CubeSat that studied the mass and shape of the Milky Way's halo, a region around our galaxy filled with hot gas. The mission was led by students and researchers at the University of Iowa with NASA participation.

Launched: May 21, 2018
Decommissioned: September 29, 2020