News tagged with host star

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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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Hubble observes calcium-rich supernovae

The NASA/ESA Hubble Space Telescope offers a multitude of spectacular images of celestial objects and a huge amount of scientific data helpful for astronomers. A team of scientists from UK and Sweden has recently made use ...

dateMar 02, 2016 in Astronomy report
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