Our galaxy contains about 200 billion stars. Astronomers believed that some of these stars must have solar systems with planets. They went looking – and found some.They call these planets extrasolar planets or exoplanets. Here are some fun facts about them.Do you know:Where are exoplanets?How many exoplanets have scientists discovered?How many types of exoplanets are there?Do all exoplanets orbit stars the way our planets orbit the sun?And much more.Find out the answers to these questions and more and amaze your family and friends with these fun facts.Ages 8 and up.Reading level: 6.9All measurements in American and metric.LearningIsland.com believes in the value of children practicing reading for 15 minutes every day. Our 15-Minute Books give children lots of fun, exciting choices to read, from classic stories, to mysteries, to books of knowledge. Many books are appropriate for hi-lo readers. Open the world of reading to a child by having them read for 15 minutes a day.