NASA on Thursday pushed back against comments from U.S. celebrity Kim Kardashian suggesting that the 1969 moon landing was faked.

During an episode of The Kardashians TV series that aired Thursday, the Skims founder questioned whether the space mission ever took place, and noted her fascination with conspiracy theories.

“There’s no gravity on the moon. Why is the flag blowing?” Kardashian said. “The shoes that they have in the museum that they wore on the moon is a different print in the photos. Why are there no stars?” she continued. “They’re gonna say I’m crazy no matter what, but like, go to TikTok. See for yourself … ”

Hours after the episode aired, acting NASA administrator Sean Duffy responded to Kardashian in a post including a clip of her remarks.

“Yes, we’ve been to the Moon before … six times!” Duffy wrote. “And even better: NASA Artemis is going back under the leadership of POTUS [U.S. President Donald Trump]. We won the last space race and we will win this one too.”

Kardashian has said her doubts stem from alleged past comments by Buzz Aldrin, the second man to walk on the moon after Neil Armstrong, which have long circulated online in edited or misleading form, and that those videos led her to question the official account of the landing. (Aldrin, for his part, once punched a man who questioned whether the moon landings were real or not.)

After Duffy’s post, Kardashian replied with a change of subject: “Wait … what’s the tea on 3I Atlas?!?!!!!!!!?????,” referencing an interstellar comet recently spotted passing through the solar system.

Duffy, who was selected by Trump in July as acting boss of the space agency, responded that it was a “Great question!” said NASA’s current observations show that this is the third interstellar comet to pass through our solar system.

“No aliens. No threat to life here on Earth,” he said, adding that he appreciated Kardashian’s excitement about the Artemis moon mission and invited her to attend the upcoming Artemis launch at Kennedy Space Center.

The exchange comes amid growing tension between NASA and the Trump administration, which has proposed deep budget cuts and agency restructuring even as it touts a renewed focus on lunar exploration.

Conspiracy theories claiming the moon landing was staged have circulated for decades. According to the Institute of Physics, “every single argument claiming that NASA faked the Moon landings has been discredited.”

The institute points to photographic, radiation and physical evidence, including 382 kilograms of lunar rock brought back by Apollo astronauts, all of which have been independently verified by laboratories worldwide.