C. F. Earl Libros

In a very short time, rapper Macklemore and his music-making partner Ryan Lewis seemed to take over the pop world. Giant hit songs like "Thrift Shop" and "Can't Hold Us"-as well as the successful album The Heist-have earned Macklemore fans of all ages. Find out the facts of Macklemore's life, from growing up listening to hip-hop to becoming one of the most successful rappers working in music. Discover how Macklemore became the star that millions of fans around the world love today.

For many years, government space agencies were the only way humans could leave Earth and explore space. Today, however, laws have changed, and new companies are each hoping to be the first to make space exploration a successful business. Learn about the history of space exploration and how things have changed to allow private companies the opportunity to venture into space. Find out about the companies making private space exploration a new reality-whether for tourism, scientific exploration, or profit. Maybe one day you, too, could be a space tourist!

Few music stars are more popular and successful than pop singer Katy Perry. With huge hits like "Firework" and "Roar," the bubbly and candy-colored Katy has taken over the music world in just a few short years. Learn about the life of one of pop's biggest stars. Discover how Katy went from strumming her guitar alone to singing for sold out concerts filled with fans.

In the last few years, Adele has gone from writing songs in her bedroom and singing with her friends to taking the stage for thousands and selling millions of albums. Discover the true story of the British singer with the amazing voice. Learn about Adele's early love for music and how she became the artist fans around the world know today.

Lady Gaga has become one of the biggest stars in music since she burst on to the world stage in 2008. Her surprising outfits and amazing songs have helped to make the singer popular with fans-who Gaga calls her "little monsters"-around the globe. Discover the story behind Lady Gaga's fame, including how she got her name and found success in the music business. Learn about the life story of one of music's most interesting and exciting stars.