Largest Ever Hubble  What Makes Exoplanets Hot

Telescope Survey Reveals

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 so-called hot Jupiters, exoplanets about as big as Jupiter.

These Planets Orbit Extremely 

Close to their parent stars, even closer than Mercury orbits to 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 planets' chemical composition.

Using Over 600 Hours Of

Observations by the Hubble Space Telescope and 400 hours of observations by NASA's now retired Spitzer Space Telescope, 

The Study Found That Some Of The

Atmospheres of the studied hot Jupiters contain high concentrations of hydrogen, titanium oxide, vanadium oxide and iron hydride.

These Atmospheres Displayed What

Scientists call thermal inversion, a phenomenon whereby atmospheric temperature rises, instead of drops with altitude.

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Than Nuclear For