Water in the atmosphere of extra-solar planets

coelsblog

How many generations of humans have looked up at the night sky and wondered how many of stars had planets around them? Perhaps it is only a few, since early humans would have considered our planet and our star to be unique, and would have looked at other stars without comprehending that they were the same as our sun, only at a vast distance. But ours is the first generation to know the answer, that most stars do indeed have planets around them.

WASP camera array

My research involves looking for such extra-solar planets. We operate the WASP-South transit survey, which is an array of cameras out in the South African desert which photographs the night sky repeatedly, every clear night, building up light-curves of millions of stars, watching for small dips in their light caused by a planet passing in front of the star, once per orbit.

Exoplanet transit illustration

The depth of theā€¦

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