How to Measure Gravity in Space

Daniel Altschuler: How would you even design an experiment like this? He says it requires going up to space. You have to account for all the other masses nearby, right? Like the space station is also going to be tugging on these things. And because you're trying to measure something very, very small, then you need to be very, very accurate about your measurements.Altschler: Everything out in space is very expensive and very complicated.