'Pedro Bernardinelli and Gary Bernstein' discovered the 'Bernardinelli-Bernstein Comet', named ‘C/2014 UN271’, based on archival images obtained from the Dark Energy Survey at an astronomical observatory in Chile in 2010.
Its estimated diameter is about 129 km. and the mass is 500 trillion tons. It is about 50 times larger than most of the comets ever known.
This comet is believed to be moving towards the Sun for more than a million years. It probably originated in the 'Oort Cloud' (cloud of comets). The Oort Cloud is a remote region of the Solar System, which is probably the source of the origin of most comets. However, the Oort cloud is still a theoretical concept.
Recently, NASA has confirmed it to be the largest icy comet ever known by the Hubble Space Telescope. Despite being at maximum distance, it is extremely bright.
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