William Shatner reflects after becoming oldest person to go to space: "You're immersed in things that are indescribable"

William Shatner is back on Earth, but still over the moon about his trip to the edge of space.

Shatner, best known as Captain Kirk on "Star Trek," rode a Blue Origin rocket with three other passengers Wednesday, rising more than 66 miles above the Earth in just minutes.

The 90-year-old actor became the oldest person ever to go into space. He described to "CBS Mornings" what he felt as he rose above the Earth.