Gayle King has admitted she is nervous about heading into space.

The 70-year-old presenter will be part of an all-female mission on the next launch of Jeff Bezos' Blue Origin rocket on Monday (April 14), including pop star Katy Perry and Bezos' fiancee Lauren Sanchez.

And she has admitted it's "very daunting" knowing that only a small number of people have made the trip.

She said on her show CBS Mornings: "I'll be ready Monday morning, I promise. I will be ready Monday morning. But I still have a ways to go before I'm like, 'Okay, put me in, coach. Let's go.'"