Star Trek actor William Shatner became the oldest person to fly to space on Wednesday, on a Blue Origin New Shepard rocket. The 90-year-old actor, along with three Blue Origin staffers, had a ten-minute space flight from a launch site in west Texas to 66 miles in the sky.

However, two actors have joined a slew of environmentalists in condemning Shatner’s voyage to space earlier this month.

Joan Collins and Brian Cox recently came out against the icon, well remembered for his role of James T. Kirk, stating that there are more pressing issues to address on Earth before venturing into space.

Collins stated on ITV’s The Jonathan Ross Show: “It’s amazing isn’t it? What a fool. Who wants to do that? No, absolutely not. Did you see Bill Shatner?

“He was in the air and they were turning him upside down. Let’s take care of this planet first before we start going off.”

Shatner was also ridiculed by his longstanding adversary, Star Trek co-star George Takei, who dubbed his former on-screen captain a “unfit guinea pig” for space tourism.

“He’s boldly going where other people have gone before,” Takei, 84, told Page Six after the Blue Origin team arrived on Wednesday. “So 90 years old is going to show a great deal more on the wear and tear on the human body, so he’ll be a good specimen to study. Although he’s not the fittest specimen of 90 years old, so he’ll be a specimen that’s unfit!”

Similarly, Brian Cox, well known for his performances in “Succession” and “Braveheart,” claimed he would never go to space.

“I think it’s ridiculous. I remember watching [Sir Richard] Branson and Bezos going up for their 11 minutes or whatever,” Cox said.

“No, we do not need more spaceships. We’ve got enough crap flying around up there. We do not need any more,” he added.

It comes after the Duke of Cambridge criticized space tourism.

Prince William, who has spoken out against the space race, stated that the world’s brightest brains should be focused on tackling environmental challenges on Earth.

“We need some of the world’s greatest brains and minds fixed on trying to repair this planet, not trying to find the next place to go and live,” the Duke of Cambridge said to BBC Newscast’s Adam Fleming when questioned about the current billionaire space race and the hoopla surrounding space tourism.

“It really is quite crucial to be focusing on this [planet] rather than giving up and heading out into space to try and think of solutions for the future,” the duke added.

In an interview with the US television show Entertainment Tonight, Shatner responded, “He’s a lovely Englishman. He’s going to be king of England one day. He’s a lovely, gentle, educated man, but he’s got the wrong idea.

“The idea here is not to go, ‘Yeah, look at me. I’m in space’. No, I would tell the prince, and I hope the prince gets this message, this is a baby step of getting industry, all those polluting industries … off of Earth.”

After returning to Earth, the 90-year-old actor called the trip “most profound experience.”

“I hope I never recover from this. I hope I can maintain what I feel now. I don’t want to lose it,” he said. “It’s so — it’s so much larger than me and life.”