The presence of carbon thirteen confirmed that the glycine was from space.
VOA: special.2009.09.30
This past December, for example, NASA's Kepler space telescope confirmed its first planet in the habitable zone, a "super Earth" known as Kepler-22b that's thought to be 2.4 times as wide as our planet.
Peggy Whitson, who three years ago was named the 13th Chief of the Astronaut Office, making her the first woman to lead the U.S. Astronaut Corps, stepped down in July, a spokesman at NASA's Johnson Space Center in Houston confirmed to collectSpace.com.