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Jupiter-like exoplanets found in sweet spot in most planetary systems
June 12, 2019
As planets form in the swirling gas and dust around young stars, there seems to be a sweet spot where most of the large, Jupiter-like gas giants congregate, centered around the orbit where Jupiter sits today in our own solar system. The location of this sweet spot is between 3 and 10 times the distance Earth sits from our sun (3-10 astronomical units, or AU). Jupiter is 5.2 AU from our sun. That’s just one of the conclusions of an unprecedented analysis of 300 stars captured by the Gemini Planet Imager, or GPI, a sensitive infrared detector mounted on the 8-meter Gemini South telescope in Chile.
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Exiled planet linked to stellar flyby 3 million years ago
February 28, 2019
Some of the peculiar aspects of our solar system — an enveloping cloud of comets, dwarf planets in weird orbits and, if it truly exists, a possible Planet Nine far from the sun — have been linked to the close approach of another star in our system’s infancy that flung things helter-skelter. But are stellar flybys really capable of knocking planets, comets and asteroids askew, reshaping entire planetary systems? UC Berkeley and Stanford University astronomers think they have now found a smoking gun.
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UC Berkeley Astronomers Lead New NASA-Funded Search for Habitable Planets
April 22, 2015
Department of Astronomy faculty member James Graham will lead one of the 16 new projects funded by NASA in efforts to streamline the search for habitable planets. The project is part of the newly announced NExSS (Nexus for Exoplanet System Science) which seeks to bring together "the best and the brightest" to oversee the search. The Berkeley "exoplanets unveiled" project, which will work alongside scientists at Stanford, is unique due to it's involvement of the "Gemini Planet Imager, a new instrument for the Gemini Observatory that began its exoplanet survey in November 2014; GPI has already imaged two previously known exo-planets and disks…
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Planet makes weird loops around dusty star
January 13, 2013
"Newly released NASA Hubble Space Telescope images of a vast debris disk encircling the nearby star Fomalhaut and a mysterious planet circling it may provide forensic evidence of a titanic planetary disruption in the system. Astronomers are surprised to find the debris belt is wider than previously known, spanning a section of space from 14 to nearly 20 billion miles from the star. Even more surprisingly, the latest Hubble images have allowed a team of astronomers to calculate the planet follows an unusual elliptical orbit that carries it on a potentially destructive path through the vast dust ring. The planet,…
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