By Louise Lerner
The aliens came on Oct. 19, 2017.
That was the day telescopes picked up a strange object with an odd, elongated shape that moved like a comet—but had no apparent tail. The object, which baffled astronomers and led some to claim it could be a spacecraft sent by intelligent life, was named ‘Oumuamua, which means “messenger from afar arriving first” in Hawaiian. But a new theory proposed by University of Chicago and Yale astronomers explains the phenomenon without aliens—but with interesting scientific implications.
“It’s a frozen iceberg of molecular hydrogen,” said Darryl Seligman, an incoming UChicago postdoctoral fellow who authored a paper in Astrophysical Journal Letters laying out the explanation. “This explains every mysterious property about it. And if it’s true, it’s likely that the galaxy is full of similar objects.”
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