William Shatner said that space trips can cause feelings of grief and sadness.

The "Star Trek" actor wrote in his new book, "Boldly Go: Reflections on a Life of Awe and Wonder," that his spaceflight with Blue Origin in October 2021, felt like a funeral and he was sad.

It isn't the first time that Shatner has expressed his feelings from the trip. He told Bezos he hoped he wouldn't recover from the experience, and previously told CNN he couldn't stop crying after the spaceflight.

The first married couple to fly into space on a commercial vehicle are also in agreement with the actor.

Two people were on Blue Origin's 20th trip to the edge of space on March 31. They are going to launch with Bezos' company.

Sharon and her husband are the CEOs of Tricor International and SpaceKids Global.

Sharon and Marc Hagle
Sharon and Marc Hagle at Blue Origin facility in Texas.
Blue Origin

The space was very dark. It was difficult to see through it. Sharon said that Shatner's experience was similar to hers. You wouldn't be able to pass through that darkness if you hadn't passed.

Shatner wrote in his book that the contrast between the Earth and space made him sad.

The Hagles and Shatner experienced a cognitive shift while viewing Earth from space.

After the capsule returned to Earth, the Blue Origin team weren't allowed to open the hatch until the astronauts inside gave them the thumbs up.

When you come back to Earth, you have a responsibility to make the world a better place, because once you look back at it, it has a tremendous impact on you and your soul.

"We're tearing up, even now, because we have our own emotional experiences based on our lives on Earth," he said.

Sharon and Marc Hagle
Sharon and Marc Hagle walking out of the Blue Origin capsule.
Blue Origin

Sharon said it has taken a long time to process what they saw. The couple went to watch a rocket launch. Sharon told Insider that she and her husband looked at each other and cried.

When they reach zero-gravity, the Hagles plan to look out the window and point out what's going on to each other.

The human brain can't absorb all of the information that you're looking at.