Last year, astronomers discovered an unusual Earth-size exoplanet they believe has a hemisphere of molten lava, with its other hemisphere tidally locked in perpetual darkness. And at about the same time, a different group discovered a rare small, cold exoplanet with a massive outer companion 100 times the mass of Jupiter.

An international team of astronomers have been able to probe the atmosphere of an exoplanet like never before. Exoplanet Tylos, also known as WASP 121-b, is an ultra-hot Jupiter – a gas giant so close to its stars that one year lasts only 30 hours.

Astronomers have achieved a breakthrough in planetary science, revealing the complex weather of a distant gas giant with unprecedented detail. By mapping the three-dimensional structure of the planet’s atmosphere,