Posts by davenpoj


How do planets form? This is a question that scientists have asked themselves for centuries. Kant (in 1755) and Laplace (in 1796) postulated the nebular hypothesis, which states that the solar system planets formed from a rotating disk of material. Over the years planet formation theory has been greatly expanded and improved with the detailed knowledge gained from observing and exploring the solar system and studying the meteoritic...

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Astronomers using NASA’s Hubble Space Telescope have measured the rotation rate of an extreme exoplanet by observing the varied brightness in its atmosphere. This is the first measurement of the rotation of a massive exoplanet using direct imaging. “The result is very exciting,” said Daniel Apai of the University of Arizona in Tucson, leader of the Hubble investigation. “It gives us a unique technique to...

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Preferred Hosts for Short-Period Exoplanets In an effort to learn more about how planets form around their host stars, a team of scientists has analyzed the population of Kepler-discovered exoplanet candidates, looking for trends in where they’re found. Since its launch in 2009, Kepler has found thousands of candidate exoplanets around a variety of star types. Especially intriguing is the large population of “super-Earths” and...

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