https://www.cnet.com/news/inside-nasa-kepler-hunt-for-exoplanets-just-like-earth/

There are other planets, known as exoplanets, which are rocky orbs like ours and which orbit their own stars in other solar systems. If those planets exist in the so-called Goldilocks zone -- the orbital distance around their star that makes them not too hot and not too cold -- then they could have the conditions (and, most importantly, the liquid water on their surface) to support life. 

In this week's episode of Watch This Space, we take a look at NASA's hunt for exoplanets and the role the Kepler spacecraft has played in hunting out "Earth analogs."