Biggest Hubble Survey Ever Reveals What Makes Some Exoplanets Hot

An analysis of hundreds of hours of observations by the Hubble Space Telescope has revealed what makes some exoplanets incredibly hot.

In a new study, a team of scientists analyzed the atmospheres of 25 hot Jupiters, Jupiter-sized exoplanets. These planets, however, orbit extremely close to their parent stars, even closer than Mercury orbits towards the sun, making them extremely hot. This new study suggests that the atmospheres of these exoplanets exhibit some unusual thermal behavior that could be related to the chemical composition of the planets.

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