WASP-12B

WASP-12b is a Jupiter-sized exoplanet that was discovered in 2008 by a team of astronomers using the Wide Angle Search for Planets (WASP) survey. It is located about 1,400 light-years away in the constellation Auriga, and is considered to be one of the hottest known exoplanets.

WASP-12b orbits very close to its parent star, with an orbital period of just 1.1 Earth days. Its close proximity to the star means that it is subject to intense radiation and heating, which has caused its atmosphere to expand to several times the size of Jupiter's atmosphere. In fact, its atmosphere is so hot that it is being blasted away from the planet by the star's radiation and stellar wind, which is creating a comet-like tail that extends behind the planet.

One of the unique features of WASP-12b is its size. It is considered to be a "bloated" planet, with a radius about 1.8 times that of Jupiter. Its large size is thought to be due to the intense heating from the star, which has caused its atmosphere to expand and become less dense.

Another interesting characteristic of WASP-12b is its composition. It is a gas giant planet that is primarily composed of hydrogen and helium, but it also contains trace amounts of heavy elements like carbon, oxygen, and nitrogen. This composition is similar to that of Jupiter, but its high temperature and low density suggest that its atmosphere is enriched in heavier elements.

The study of exoplanets like WASP-12b is important for understanding the diversity of planetary systems that exist in the universe. It provides insights into the formation and evolution of planets, and can help us to better understand the conditions that are necessary for the formation and survival of life. The intense radiation and heating that is experienced by planets like WASP-12b also provides important data for testing theories about planetary atmospheres and atmospheric escape.

In conclusion, WASP-12b is a fascinating exoplanet that is helping us to better understand the diversity of planetary systems that exist in the universe. Its large size, unique composition, and intense heating make it a valuable target for further study, and it will likely continue to provide important insights into the formation and evolution of planets for years to come.