Having trouble with the lengthy Terra Dome of Pragmata? Here's our complete walkthrough for Sector 3, and how to free Eight.

On a typical shot day, the target might be a piece of metal foil thinner than a human hair, a jet of gas or a tiny plastic pellet – each designed to answer a different scientific question ...

For a long time, it was thought that this [technique] required telescopes in space,” says John Mather, the Nobel ...