Since hot Jupiter exoplanets are “phase locked” by tidal interactions (that is, the same side always faces the host star, just as the same side of our moon always faces us), there will be a large flow of heat from the highly irradiated “day side” to the cooler “night side”.
This is thought to result in very strong winds rushing around the planet's atmosphere.

Taylor Bell and Nicolas Cowan have pointed out that hydrogen will tend to be ionised on the day-side face.
After flowing to the cooler face in a wind, it will then tend to recombine into neutral atoms, and thus will enhance the transport of heat.

The planet is so close to WASP-12 that the star's tidal forces are distorting it into an egg shape and pulling away its atmosphere at a rate of about 10⁻⁷ MJ (about 189 quadrillion tons) per year.
The so-called "tidal heating", and the proximity of the planet to its star, combine to bring the surface temperature to more than 2,500 K (2,200 °C).

On May 20, 2010, the Hubble Space Telescope spotted WASP-12b being "consumed" by its star.
Scientists had been aware that stars could consume planets; however, this was the first time such an event had been observed so clearly.
NASA has estimated that the planet has 10 million years left of its life.

The Hubble Space Telescope observed the planet by using its Cosmic Origins Spectrograph (COS).
The observations have confirmed predictions published in Nature in February 2009 by Peking University's Shu-lin Li.
The planet's atmosphere has ballooned to be nearly three times the radius of Jupiter, while the planet itself has 40% more mass than Jupiter.
Since hot Jupiter exoplanets are “phase locked” by tidal interactions (that is, the same side always faces the host star, just as the same side of our moon always faces us), there will be a large flow of heat from the highly irradiated “day side” to the cooler “night side”. This is thought to result in very strong winds rushing around the planet's atmosphere.
Taylor Bell and Nicolas Cowan have pointed out that hydrogen will tend to be ionised on the day-side face. After flowing to the cooler face in a wind, it will then tend to recombine into neutral atoms, and thus will enhance the transport of heat.
The planet is so close to WASP-12 that the star's tidal forces are distorting it into an egg shape and pulling away its atmosphere at a rate of about 10⁻⁷ MJ (about 189 quadrillion tons) per year. The so-called "tidal heating", and the proximity of the planet to its star, combine to bring the surface temperature to more than 2,500 K (2,200 °C).
On May 20, 2010, the Hubble Space Telescope spotted WASP-12b being "consumed" by its star. Scientists had been aware that stars could consume planets; however, this was the first time such an event had been observed so clearly. NASA has estimated that the planet has 10 million years left of its life.
The Hubble Space Telescope observed the planet by using its Cosmic Origins Spectrograph (COS). The observations have confirmed predictions published in Nature in February 2009 by Peking University's Shu-lin Li. The planet's atmosphere has ballooned to be nearly three times the radius of Jupiter, while the planet itself has 40% more mass than Jupiter.
WASP-12b