Forty-nine highly respected former NASA astronauts, engineers and scientists are fighting back against efforts by top executives to use the federal agency to promote global warming alarmism.

The letter to NASA Administrator Charles Bolden accuses the agency of endangering “the reputation of science itself” by advocating the “extreme” position that carbon dioxide is the major cause of climate change.

The signatories include seven former Apollo astronauts as well as Chris Kraft, the man more responsible than any other for establishing Mission Control.

They want NASA to “refrain from including unproven and unsupported remarks in its future releases” and contend that the claim “that man-made carbon dioxide is having a catastrophic impact on global climate change” is “not substantiated.”

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