Close encounter with alien star could explain ’Oumuamua, debunk Planet Nine

Our solar system has several "belts" of rocky planetesimals that are essentially the crumbs left over from the formation of the planets and moons. But new research suggests some of them could actually be alien, captured during close flybys with other star systems. These close encounters could also explain objects like 'Oumuamua and might even provide an alternative to the "Planet Nine" hypothesis.

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Category: Space

Tags:

• Asteroid
• Astronomy
• Planet 9
• Solar System
• Stars
• University of Zurich

from New Atlas (Gizmag) http://bit.ly/2WcB4vg