Scanning the air of an alien world. As starlight passes through a planet's atmosphere,...
If it happens once, it might be a fluke; if it repeats, it's a planet. To confirm a di...
Big planets leave big shadows. The amount of light blocked during a transit tells us exact...
Reading the "heartbeat" of a star. A graph of a star's light over time tells...
The math behind the movement. By measuring how long a planet takes to circle its star, we ...
Using gravity as a magnifying glass. Massive objects can warp the fabric of space, bending...
Taking a picture across trillions of miles. While most planets are hidden in their star...
A cosmic game of tug-of-war. Planets are small, but their gravity is enough to make their ...
Watching for the "mini-eclipse." When a planet passes in front of its star, it b...