After years of delays, the billionaire’s Blue Origin space company launched its New Glenn rocket early Thursday.

The incorporation of meat into the diet was a milestone for the human evolutionary lineage, a potential catalyst for advances such as increased brain size. But scientists have struggled to determine when meat consumption began and who did it.

Founded 25 years ago by Bezos, Blue Origin has been launching paying passengers to the edge of space since 2021, including himself. The short hops from Texas use smaller rockets named after the first American in space, Alan Shepard. New Glenn, which honors John Glenn, is five times taller.