The first-ever interstellar comet is showing signs of brightening, suggesting it may have been heated up as it passed near to the sun

The first-ever interstellar comet is showing signs of brightening, suggesting it may have been heated up as it passed near to the sun

By Jonathan OCallaghan
Two views of comet 2I/Borisov, taken by NASA’s Hubble Space Telescope
NASA, ESA and D. Jewitt (UCLA)
The interstellar comet 2I/Borisov is starting to brighten, suggesting it may be breaking apart as it makes its way out of our solar system.
The comet was first spotted in August last year, and astronomers have been keenly following it ever since. A team in Poland were the first to report outbursts from the comet in early March, more than doubling its brightness. That suggests the comet is emitting material after being heated by the sun, following its close approach in December 2019. …

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