News tagged with host star

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Will Kepler find habitable moons?

(PhysOrg.com) -- Since the launch of the NASA Kepler Mission earlier this year, astronomers have been keenly awaiting the first detection of an Earth-like planet around another star. Now, in an echo of science fiction movies ...

dateSep 03, 2009 in Astronomy
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The seven most extreme planets ever discovered

Scientists recently discovered the hottest planet ever found – with a surface temperature greater than some stars. As the hunt for planets outside our own solar system continues, we have discovered many other worlds with ...

dateJun 12, 2017 in Astronomy
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Migrating exoplanets

Many known exoplanets orbit close to their host star, within one-tenth of an astronomical unit (one AU is the average distance of the Earth from the Sun). Since their orbital periods are therefore very short and their gravitational ...

dateSep 19, 2016 in Astronomy
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Know thy star, know thy planet

When it comes to exoplanets, astronomers have realized that they only know the properties of the planets they discover as well as they know the properties of the stars being orbited. For a planet's size, precisely characterizing ...

dateSep 14, 2016 in Astronomy
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Newborn giant planet grazes its star

For the past 20 years, exoplanets known as 'hot Jupiters' have puzzled astronomers. These giant planets orbit 100 times closer to their host stars than Jupiter does to the Sun, which increases their surface temperatures. ...

dateJun 21, 2016 in Astronomy
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