Learn about the solar system in our new What If song. Explore planets, moons, and cosmic wonders through music and imagination.

Our solar system is the subject of composer Gustav Holst's The Planets, which premiered 100 years ago on Sept. 29, 1918.Photo by NASA - Wikimedia commons One hundred years ago, a symphonic blockbuster ...

Asteroids and comets can teach us about the beginnings of the universe. Asteroids and comets are more than just frozen rocks flying about in space. They’re key to understanding the early history of ...

Astronomers have discovered a rare in-sync solar system with six planets moving like a grand cosmic orchestra, untouched by outside forces since their birth billions of years ago. The find, announced ...