Radio telescopes can help astronomers learn the secrets of the universe's birth. But, such telescopes must be huge, and radio signals from Earth and the sun interfere with their readings. Learn how engineer Saptarshi Bandyopadhyay plans to solve these problems and more by building a huge radio telescope in a crater on the moon. The books in the Out of This World series feature projects that have won grants from the NASA Innovative Advanced Concepts program (NIAC). The program provides funding to teams working to develop bold new advances in space technology.