Pristine interstellar comet came from a system containing giant planets
CNN
An interstellar comet that crossed into our solar system nearly two years ago is revealing more of its secrets.
Researchers have determined that the comet, known as 2I/Borisov, is more pristine and unaltered than any of the comets that have been observed in our solar system. The dust around the comet is also intriguingly different than those around other comets. Combined, these two findings add evidence to the comet's origin outside of our solar system. The results were published Tuesday in two different studies in the journals Nature Astronomy and Nature Communications.
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military options” to ensure unfettered American access to the Panama Canal, one of several new directives outlined in what amounts to a major overhaul of US strategic priorities, according to a new memo that was sent to senior leaders and reviewed by CNN.
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