10 projects under NASA’s Planetary Science Deep Space SmallSat Studies (PSDS3) program. The agency picked 10 projects from PSDS3 to develop mission concepts that use small satellites to study different celestial bodies in the Solar System. NASA awarded the projects a total of $3.6 million to get their concept planning started, but it’ll take some time before they’re ready for take off. Small satellites are spacecraft that weigh less than 400 pounds, and could be as big as a fridge or as small as a single CubeSat unit that measures 4 cubic inches.
Two of the projects focus on Venus. One team plans to build a 66-pound probe to measure noble gases and their isotopes, while the other wants to use a 12-unit CubeSat to measure its atmosphere’s ultraviolet absorption and nightglow emissions. A team from the Smithsonian Astrophysical Observatory wants to send a 12-unit CubeSat to map the elemental composition of the moon. Another group from NASA’s Goddard Space Flight Center plans to launch a 12-unit CubeSat of their own to investigate the lunar hydrogen cycle. These smallsats could provide preliminary data needed for much bigger projects in the future. They’re also not as expensive to launch, since they’re typically loaded as auxiliary payloads. Jim Green, director of the Planetary Science Division at NASA Headquarters in Washington