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Astronomers probe origin of Planet 9

Astronomers at the University of Sheffield have shown that 'Planet 9' – an unseen planet on the edge of our solar system – probably formed closer to home than previously thought.

dateSep 14, 2017 in Astronomy
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Close encounters of the stellar kind

The movements of more than 300 000 stars surveyed by ESA's Gaia satellite reveal that rare close encounters with our sun might disturb the cloud of comets at the far reaches of our solar system, sending some towards Earth ...

dateAug 31, 2017 in Astronomy
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Two weeks in the life of a sunspot

On July 5, 2017, NASA's Solar Dynamics Observatory watched an active region—an area of intense and complex magnetic fields—rotate into view on the Sun. The satellite continued to track the region as it grew and eventually ...

dateAug 04, 2017 in Space Exploration
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