BellaOnline Forums Education Astronomy Search for Earth's Twin – book review *new*

Years ago, if you weren't serious about being an astronomer, a good career-killer would have been hunting for exoplanets. It's different now. Stuart Clark tells the story from the first discovery of a planet orbiting another star to the current Search for Earth's Twin.

Search for Earth's Twin – book review

A number of planets orbiting stars outside the Solar System have been directly imaged, but most of the 4000 known exoplanets haven't been. Very few have been discovered by direct imaging. How do astronomers find what they can't see?

Searching for Exoplanets

Our Solar System was the only one we knew. Astronomers used it to explain how star systems were made. But beware the theory based on only one example! We now know of thousands of planets around other suns, and the theories need revising. Here are a few of the astonishing planets we've found.

Exoplanets - Hottest, Darkest, Oldest

We're used to a tidy Solar System. But there are some pretty strange planets orbiting stars far, far away. On one it doesn't rain water, it rains rock. Another has the density of cork. Some have two suns. And what would you do with a diamond the size of a planet?

Exotic Exoplanets Tour