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Scientists estimate solar nebula's lifetime

About 4.6 billion years ago, an enormous cloud of hydrogen gas and dust collapsed under its own weight, eventually flattening into a disk called the solar nebula. Most of this interstellar material contracted at the disk's ...

dateFeb 09, 2017 in Space Exploration
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Four-planet system directly imaged in motion

Located about 129 light years from Earth in the direction of the Pegasus constellation is the relatively young star system of HR 8799. Beginning in 2008, four orbiting exoplanets were discovered in this system which – alongside ...

dateJan 30, 2017 in Astronomy
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