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Scientist proposes new definition of a planet

Pluto hogs the spotlight in the continuing scientific debate over what is and what is not a planet, but a less conspicuous argument rages on about the planetary status of massive objects outside our solar system. The dispute ...

dateJan 23, 2018 in Astronomy
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Giant bubbles on red giant star's surface

Astronomers using ESO's Very Large Telescope have for the first time directly observed granulation patterns on the surface of a star outside the solar system—the aging red giant π1 Gruis. This remarkable new image from ...

dateDec 20, 2017 in Astronomy
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The initial mass function

The gas and dust in giant molecular clouds gradually come together under the influence of gravity to form stars. Precisely how this occurs, however, is incompletely understood. The mass of a star, for example, is by far the ...

dateDec 11, 2017 in Astronomy
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