  The recent, rapid advancement in space exploration is thanks to the
accelerated miniaturization of electronics components on a spacecraft that is
reducing the mass, volume and cost of satellites. Yet, access to space remains
a distant dream as there is growing complexity in what is required of
satellites and increasing space traffic. Interplanetary exploration is even
harder and has limited possibilities for low cost mission. All of these factors
make even CubeSats, the entry-level standard too expensive for most and
therefore a better way needs to be found. The proposed solution in this report
is a low-mass, low-cost, disposable solution that exploits the latest advances
in electronics and is relatively easy to integrate: FemtoSats. FemtoSats are
sub-100-gram spacecraft. The FemtoSat concept is based on launching a swarm
where the main tasks are divided between the members of the swarm. This means
that if one fails the swarm can take its place and therefore substitute it
without risking the whole mission. In this paper we explore the utility of
FemtoSats to perform first exploration and mapping of a Lunar PSR. This concept
was recognized as finalist for the NASA BIG Competition in 2020. This is an
example of a high-risk, high-reward mission where losing one FemtoSat does not
mean the mission is in danger as it happens with regular satellite missions.
