We'll probably never know for sure, but this new explanation holds water, scientists say.
One of the questions that scientists struggled to answer had to do with Oumuamua's speed, which seemed to increase as the rock rounded the. Large bodies, such as planets and stars, can give smaller objects, including comets and asteroids, a gravitational kick that speeds them up. But in the case of 'Oumuamua, which at 54 miles per second cruised three times faster than an average solar system comet, these gravitational kicks couldn't explain the observed acceleration.
Many scientists have tried to explain the mechanism behind 'Oumuamua's acceleration, but all of the proposed ideas have had significant gaps. In a new study, Jennifer Bergner, an assistant professor of chemistry at the University of California, Berkeley and Darryl Seligman, a U.S. National Science Foundation postdoctoral fellow at Cornell University, propose a new theory, which they think might finally put the issue to rest.
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