Satellites To Try Formation Flying on ISS

SoySauc writes "From a story on the New Scientist site: 'A soccer-ball-sized satellite will soon be floating aboard the International Space Station. Once joined by two others, it will help researchers test formation flying and autonomous rendezvous and docking maneuvers for future orbiting satellites.' NASA's DART mission was designed to do the same thing, but in 2005 shut itself down and bumped into the satellite it was only meant to approach."

Comments

Re:Why CO2 instead of O2?

[FooAtWFU]

Probably because carbon dioxide compresses very well (which is why you see it in soft drinks and compressed C02 cartridges in the terrestrial world). Also, oxygen is dangerously flammable.