planet hunting

"Exploring the Universe: Objects in Motion" encourages participants to explore the complex but predictable ways objects in the universe interact with each other. Stars, planets, moons, and other objects in space orbit around each other because of gravity, and NASA...

In "Exploring the Universe: Exoplanet Transits," participants simulate one of the methods scientists use to discover planets orbiting distant stars. Even when a planet is too far away to observe directly, scientists can infer its presence by watching for slight,...