A simple explanation that might finally put one theory to rest.
on Wednesday has concluded that ‘Oumuamua’s odd acceleration was probably not because of some kind of extraterrestrial technology, but rather due to gas. The model suggests that hydrogen released from ice reserves simply led to an outgassing that pushed the object forward and caused it to speed up. Its physics are a bit unusual for a comet—but not out of the realm of what’s possible.
Comets are big rocks made of dirty, dust-covered ice. When they get closer to the sun, that ice is superheated, and the comet starts to eject water, dust, and other molecules, giving comets their very notable comas . The model they came up with fits the bill. Hydrogen trapped in ice on ‘Oumuamua could be exposed to the heat of the sun in such a way that the structure of the ice changes and forces bubbles out, releasing hydrogen gas into space with enough force to accelerate the object forward.
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