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Nasa’s shares image of most distant in-bound comet ever found


Nasa just shared an astrophotographer’s portrait of essentially the most distant in-bound, energetic comet ever discovered.

Amateur astronomer Jose Chambo captured a picture of comet C/2017 K2 (PanSTARRS) on 20 June, which is now lower than 300 million kilometers from Earth and can make its closest approach to our planet on 14 July — passing with loads of distance — and its closest approach to the Sun in December.

An enormous comet with an 18-kilometer diameter core, C/2017 K2 (PanSTARRS) was already producing a coma, a cloud of gas released because the Sun warmed the comet, when it was first discovered in 2017 2.4 billion kilometers away. The glowing coma ought to be visible within the night sky with the help of a small telescope — despite the comet’s size, its prone to remain too faint for naked eye observations.

C/2017 K2 (PanSTARRS) has spent an estimated 3 million years traveling toward the Sun from the Oort cloud, a realm of icy planetesimals far beyond Neptune and even the icy Kuiper belt at the sting of the Solar System, stretching as much as several light years from the Sun.

An illustration of the Oort cloud of icy objects surrounding the Sun at great distances


The Oort cloud is though to be the source of many comets following hyperbolic orbits, as C/2017 K2 (PanSTARRS) does. In a schematic from the Hubble Space Telescope website, the comet’s path could be seen to be almost perpendicular to the plane of the solar system.

An schematic of the hyperbolic orbit of comet C/2017 K2 (PanSTARRS)

( NASA , ESA , and A. Feild (STScI) )

The comet should remain visible to telescopes within the Northern hemisphere into September.

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