Our Solar System’s First Known Interstellar Object Gets Unexpected Speed Boost

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This illustration shows ‘Oumuamua racing toward the outskirts of our solar system. As the complex rotation of the object makes it difficult to determine the exact shape, there are many models of what it could look like.
Credits: NASA/ESA/STScI

This animation shows the path of `Oumuamua as it passed through the inner solar system, and its location on Jan. 2, 2018, when it was last observed by NASA's Hubble Space Telescope. By then, 'Oumuamua had been boosted by 25,000 miles (40,000 kilometers) compared to where it would have been if only gravitational forces were affecting its motion.

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