News tagged with extrasolar planets

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Circular orbits for small extrasolar planets

Orbits of 74 small extrasolar planets are found to be close to circular, in contrast to previous measurements of massive exoplanets. The results, to be published in the Astrophysical Journal are obtained by the ...

dateMay 14, 2015 in Astronomy
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Nearing one thousand exoplanets

A quiet milestone in modern astronomy may soon come to pass. As of today, The Extrasolar Planets Encyclopedia lists a current tally of 998 extrasolar planets across 759 planetary systems. And although various ...

dateOct 21, 2013 in Astronomy
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Cassini Instrument Learns New Tricks

(Phys.org)—For seven years, a mini-fridge-sized instrument aboard NASA's Cassini spacecraft reliably investigated weather patterns swirling around Saturn; the hydrocarbon composition of the surface of Saturn's ...

dateDec 21, 2012 in Space Exploration
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Brown Dwarfs Don't Hang Out With Stars

(PhysOrg.com) -- Brown dwarfs, objects that are less massive than stars but larger than planets, just got more elusive, based on a study of 233 nearby multiple-star systems by NASA's Hubble Space Telescope. ...

dateJan 05, 2009 in Astronomy
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What are hot Jupiters?

When astronomers first discovered other planets, they were completely unlike anything we've ever found in the Solar System. These first planets were known as "hot Jupiters", because they're giant planets ...

dateFeb 13, 2014 in Astronomy
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Many small exoplanets found to be covered in gas

During its four-year mission, NASA's Kepler space telescope discovered thousands of "planetary candidates" in our Milky Way galaxy—the vast majority of which are almost certainly actual planets. But before scientists can ...

dateJan 08, 2014 in Astronomy
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UF astronomers pioneer new planet-observing technique

(PhysOrg.com) -- Using the world’s largest optical telescope, a team of University of Florida astronomers has pioneered a new method of observing planets outside our solar system. The method suggests that large Earth-based ...

dateJun 24, 2010 in Astronomy
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Hubble to target 'hot jupiters'

(PhysOrg.com) -- An international team of astronomers led by a former UA graduate student has set out on the largest program to date exploring the alien atmospheres of "Hot Jupiters" - massive planets in solar ...

dateAug 22, 2011 in Astronomy
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Birth of a planet

The Earth and the planets of our solar system are not alone in the universe. Over the past few decades, the hunt for extrasolar planets has yielded incredible discoveries, and now planetary researchers have a new tool—simulated ...

dateSep 04, 2012 in Astronomy
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