Virgin Galactic’s VSS Unity performs a burn during July 11 flight. Credit: Virgin Galactic

Whether or not you agree with Elon Musk that we need higher volume and lower cost access to space so that a small portion of humanity can flee our imperiled planet and become planetary refugees, at least he has a plausible justification (albeit one that deserves scrutiny and debate) for undertaking major industrial activities and launch operations that inject thousands of tons of carbon and other greenhouse gasses (GHG) into the atmosphere.

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