Very dense = high ballistic coefficient = longer orbital lifetime Though I generally agree that CubeSats are relatively safe / low junkyness. In fact, most (U

Very dense = high ballistic coefficient = longer orbital lifetime Though I generally agree that CubeSats are relatively safe / low junkyness. In fact, most (US only maybe?) CubeSats have to demonstrate an orbital lifetime of less than 25 years to get a frequency allocated. (The FCC regulating space debris via frequency allocation is an interesting debate for another thread.)