https://www.livescience.com/26437-space-hedgehogs-mars-moon-phobos.html
NASA Eyes 'Hedgehog' Invasion of Mars Moon Phobos | Live Science
Jan 21, 2013 - A wild NASA mission idea would launch a small fleet of robotic "hedgehog" probes to explore the Mars moon Phobos. The Phobos Surveyor mission could launch in a...
invasion of marsnasa eyeshedgehogmoonphobos