Rep. Dana Rohrabacher (R-CA) on Tuesday raised eyebrows when he asked a panel of space experts if an advanced civilization ever lived on Mars.

The panel—which included the project scientist for NASA’s Mars 2020 rover mission, Ken Farley—was testifying in a public hearing before the House Committee on Science, Space, and Technology when Rohrabacher asked the question.

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“You have indicated that Mars had, was totally different thousands of years ago,” the GOP Congressman began. “Is it possible that there was a civilization on Mars thousands of years ago?”

“So, the evidence is that Mars was different billions of years ago, not thousands of years ago,” Farley replied. “And there is no evidence I’m aware of that—“

“Would you rule that out?” Rohrabacher pressed.

“I would say that is extremely unlikely,” Farley replied.

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That Rohrabacher, an avid climate change denier, was so interested in the possible existence of an intelligent civilization on another planet lit up the Internet Tuesday night.

Read some of the best responses below, via Twitter:

That moment when you’re not sure if the ancient Martian civilization question is a joke or if your agency’s funding depends on your answer pic.twitter.com/Nh4Yxl6Sce — Brian L Kahn (@blkahn) July 18, 2017

California Congressman Dana Rohrabacher asked NASA about ancient civilizations from Marshttps://t.co/2jkFTn8Iyr pic.twitter.com/l6CQnxR3iU — Salvador Hernandez (@SalHernandez) July 18, 2017

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His follow up question was regarding the quality of said Martians’ dank weed. — Brandon Finnigan (@B_M_Finnigan) July 18, 2017

Rep. Rohrabacher denies global warming, is the best friend to the Russians in the House and apparently is so out of touch, he asks this… https://t.co/R7wNVMiofQ — Bryan William Jones (@BWJones) July 18, 2017

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I can’t even imagine what prompted this, unless Rohrabacher was, like me, playing a lot of the original XCom in 1994. #Cydonia https://t.co/h2CWHFNxFn — Tom Nichols (@RadioFreeTom) July 18, 2017

Dit is Congreslid Dana Rohrabacher: https://t.co/huu5Hkn1Rg — Guus Valk (@apjvalk) July 18, 2017

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This is the same Rep. Rohrabacher (R-CA) who praised ISIS last month and suggested the US should support the group. https://t.co/IdlEqD8imn — Leader Baffoe (@TimBaffoe) July 18, 2017

Unexpected consequences of failing to sufficiently emphasize critical thinking in whatever schools Rohrabacher attended: https://t.co/ZigSh6dCcd — Mika McKinnon (@mikamckinnon) July 18, 2017

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Watch: Putin’s Congressman @DanaRohrabacher is on A MISSION to find out if there was ever “a civilization” on Mars https://t.co/isgt8CyVHr pic.twitter.com/VCZ7ZqCEXN — The Reagan Battalion (@ReaganBattalion) July 18, 2017

Our Vice Chairman of the Science, Space and Technology Committee, everyone — Tara M (@tarachel42) July 18, 2017

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Send #Trump on a one way rocket to Investigate — Teagan J. Forza (@usaphotodude) July 18, 2017

Dana Rohrabacher, the Mr. MaGoo of Congress — Rube Bait (@RubeBait) July 18, 2017

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Is the moon really cheese? #StupidQuestionsForAstronauts — Sidharth Rao (@Sid12Rao) July 18, 2017

looking forward to full committee hearings featuring the ghost of Robert Stack as a witness — Brian L Kahn (@blkahn) July 18, 2017

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@DanaRohrabacher Is the biggest fucking clown in the whole GOP Circus — Charlie Campbell (@pippenainteazy) July 18, 2017

What the eff. Congressman asks scientists if they’ve found ancient civilizations on Mars https://t.co/xSWxcJfc3r — Lewis Leong (@lewisleong) July 18, 2017

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@DanaRohrabacher I can suggest a good telescope and filters and a book on Mars that collectively will answer your question. — Brandon Finnigan (@B_M_Finnigan) July 18, 2017