Why NASA is Experimenting on Twins in Space To understand the the long-term effects of space on the human body, NASA is conducting an experiment involving twins! Join Tara as she explains what they hope to learn by sending one twin to space, but not the other. Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts Why Haven’t Aliens Found Us Yet? Hidden Miracles of the Natural World What Can We Learn By Drilling Into The Earth’s Mantle? What Color is the Universe? The World in UV Why Can’t We Experiment On Human Embryonic Stem Cells?