Largest comet ever observed bumps Hale-Bopp from pedestal

The Bernardinelli-Bernstein comet, identified in 2021, is officially the biggest comet ever observed. 
The new record, reported on the preprint website arXiv and now accepted for publication in the journal Astronomy and Astrophysics Letters, bumps the Hale-Bopp comet from the top spot. Hale-Bopp was discovered in 1995 and became visible to the naked eye in 1996; it was about 46 miles (74 kilometers) across. Comet Bernardinelli-Bernstein, also known as comet 2014 UN271, has now been calculated to be about 85 miles (137 km) across

Behold the 1st images from NASA’s James Webb Space Telescope!

The team behind NASA’s James Webb Space Telescope released some of the first images from the much-anticipated observatory on Friday (Feb. 11). The main photo, which doesn’t even hint at the power Webb will bring to the universe once it’s fully operational, shows a star called HD 84406 and is only a portion of the mosaic taken over 25 hours beginning on Feb. 2, during the ongoing process to align the observatory’s segmented mirror.