News tagged with extrasolar planets

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Imaging the planet-sized companion of a nearby star

(PhysOrg.com) -- Of the nearly 500 extra-solar planets that have been confirmed to date, only about a dozen have actually been seen in images. Because planets are so much fainter than their host stars, special techniques ...

dateOct 15, 2010 in Astronomy
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Early exit for hot Jupiter due to deadly tides

(PhysOrg.com) -- Bad news for planet hunters: most of the "hot Jupiters" that astronomers have been searching for in star clusters were likely destroyed long ago by their stars. In a paper accepted for publication by the ...

dateSep 10, 2010 in Astronomy
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Finding Twin Earths: Harder Than We Thought

(PhysOrg.com) -- Does a twin Earth exist somewhere in our galaxy? Astronomers are getting closer and closer to finding an Earth-sized planet in an Earth-like orbit. NASA's Kepler spacecraft just launched to find such worlds. ...

dateMar 20, 2009 in Astronomy
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Transit Search Finds Super-Neptune

(PhysOrg.com) -- Astronomers at the Harvard-Smithsonian Center for Astrophysics have discovered a planet somewhat larger and more massive than Neptune orbiting a star 120 light-years from Earth. While Neptune has a diameter ...

dateJan 20, 2009 in Astronomy
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Resolving the planetesimal belt around HR8799

Planets develop from the dusty placental disk of material that surrounds a star after it begins to shine. The dust in that disk, according to most models, starts to stick to itself until clumps develop large enough to attract ...

dateAug 15, 2016 in Astronomy
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Theft behind Planet 9 in our solar system

Through a computer-simulated study, astronomers at Lund University in Sweden show that it is highly likely that the so-called Planet 9 is an exoplanet. This would make it the first exoplanet to be discovered inside our own ...

dateMay 31, 2016 in Astronomy
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