The second interstellar object ever spotted passing through the solar system is ...
WASHINGTON - The second interstellar object ever spotted passing through the solar system is a comet that appears quite like those formed in our neighborhood of the cosmos, providing fresh evidence that other planetary systems may be very similar to our own.
Astronomers on Monday provided some of the first details about the comet now hurtling toward the sun, saying it has a solid nucleus with a radius of about six-tenths of a mile , a cloud-like structure of dust and gas emitted by the nucleus, the telltale tail of a comet and a reddish color. Both 2I/Borisov and ‘Oumuamua formed in other planetary systems and were ejected by gravitational perturbations into interstellar space as orphans wandering the cosmos.
The speed of 2I/Borisov and the nature of its orbital path demonstrated that it did not originate in our solar system, Jagiellonian University astronomer Piotr Guzik said. Guzik added that he expects that within a decade or so a space probe will be sent from Earth to visit an interstellar object.
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