In contrast, early planet hunters could observe multiple hot Jupiter orbits within a single week. The Spitzer telescope found new clues by observing a hot Jupiter known as HD 80606b, situated 190 light-years from Earth. Indeed, only a handful have been found so far. Hot Jupiters were the first kind of exoplanet found. The discovery also raises questions about other similar hot Jupiters that were found to have no stratosphere, says Thomas Beatty, a postdoc at … In 2011, about 20% of the exoplanets found were hot Jupiters. The real haul has been in gas giants, especially “hot Jupiters.” These are behemoth worlds that orbit close to their parent stars, blocking a fraction of the star’s light when it transits in front. We know of more than 4,000 exoplanets, but the first kind found — hot Jupiters — remain some of the most enigmatic planets. When astronomers first discovered other planets, they were completely unlike anything we've ever found in the Solar System. This planet orbits the highest metallicity star ([Fe/H] = 0.470 +/- … That is a lot, but it is strongly biased simply because there are the easiest planets to detect. for a Jupiter analog. Hot Jupiters are giant planets that orbit very close to their host star, typically less than one-tenth the distance between Earth and the Sun. We’re excited to share our first science results with you… we reveal that alien planet WASP-189b is one of the hottest and most extreme ultra-hot Jupiters found to date! They are found in about 1 percent of systems. A quarter-century later, they still perplex and captivate — and their origins hold lessons about planet formation in general. Researchers have found several so-called "hot Jupiters" in recent memory, including WASP-121 b, a football-shaped exoplanet 900 light-years from Earth. This planet is unusual in that it has a wildly eccentric orbit almost like that of a comet, swinging very close to its star and then back out to much greater distances over and over again every 111 days. Hot Jupiters also cause a larger re ex motion of the star than a Jupiter analog, allowing observers to characterize the planets with fewer measurements necessary to beat down the noise. HATS-41b is a very massive 9.7 +/- 1.6 M_J planet and one of only a few hot Jupiters found to date with a mass over 5 M_J. How such large and close-in worlds may have formed is explored, with implications for the entire pantheon of planets out there. "Hot Jupiters" — massive planets that orbit very close to their parent stars — have been found to be abundant outside Earth's solar system. Observations of hot Jupiter “mini-eclipses” have yielded hundreds of discoveries. 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