This is the biggest known comet in our solar system
Its nucleus is about twice the width of Rhode Island and darker than coal
![images of comet Bernardinelli-Bernstein with its dust cloud and of its nucleus alone](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2022/04/041322_SP_comet-nucleus_feat.jpg?fit=1030%2C580&ssl=1)
When the dust cloud surrounding comet Bernardinelli-Bernstein (left) is digitally removed, the bare nucleus (right) measures about 120 kilometers across.
SCIENCE: NASA, ESA, Man-To Hui/Macau Univ. of Science and Technology, D. Jewitt/UCLA; IMAGE PROCESSING: Alyssa Pagan/STScI