Scientists are developing "artificial photosynthesis" — which will harness the Sun’s light to generate fuel and breathable air — for future long-term spaceflights. To simulate microgravity, the researchers drops the entire experiment down a 150-meter tower, leading to 9.3 seconds of weightlessness.

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Scientists are developing "artificial photosynthesis" — which will harness the Sun’s light to generate fuel and breathable air — for future long-term spaceflights. To simulate microgravity, the researchers drops the entire experiment down a 150-meter tower, leading to 9.3 seconds of weightlessness.