Hi everyone, I have a question - what's the smallest unmanned entry vehicle possible for descent from Martian orbit to the surface using an aeroshield and parachute? What kind of mass and dimensions would be feasible for a minimal payload? Do you think 10cm wide is too small? How about 5cm wide? 5 kg? 2 kg? How small is too small? What's the smallest you can go, before weird problems of slipstream turbulence and cross-winds cause too much difficulty in targeting a landing zone? The landing zone I was thinking of was a fairly large one - the Hellas Basin - and so I'd imagine it wouldn't be too hard to hit from a polar orbit. The payload merely has to be able to measure ambient temperature, atmospheric pressure and water humidity on the surface in Hellas Basin. Any useful feedback is appreciated.