The Earth Next Door: What You Need to Know About Proxima B Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Astronomers announced Wednesday that they had detected a planet in our neighboring solar system in the "Goldilocks zone." ( Oleg1969 / Shutterstock ) Hosted by Todd Zwillich Produced by PRI and WNYC