This work is for ages 14+. In 1931, Karl Jansky was hired by AT&T to search for sources of static that might interfere with radio waves for transatlantic communications. Jansky identified static from thunderstorms and random radio noise from devices on Earth, but he also found a radio hiss from the Milky Way galaxy. After World War II, astronomers constructed more radio telescopes with greater sensitivity to faint radio signals from space. In the...
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This book is written for pre-teens and teens who love to learn, even if they don't necessarily love school. Discover yourself as an intense and excitable learner, a creative learner, and a self-direct...