In celebration of the 20th anniversary of the first confirmed planet around a sun-like star, a collection of some interesting exoplanets has been put together. Some of these are rocky, some are gaseous and some are very, very cold. All have advanced scientific understanding of our place in the cosmos.
Kepler-186f:
1. Kepler-186f: first rocky planet to be found within the habitable zone – the region around the host star where the temperature is right for liquid water. This planet is also very close in size to Earth. Even though we may not find out what’s going on at the surface of this planet anytime soon, it’s a strong reminder of why new technologies are being developed that will enable scientists to get a closer look at distance worlds.
HD 209458 b
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