Largest-ever comet cometh! But have no fear, it won’t come near

The four billion-year-old comet has been falling toward the Sun for over one million years.

Sequence showing how the nucleus of Comet C/2014 UN271 was isolated from a vast shell of dust and gas surrounding the solid icy nucleus. Credit: NASA, ESA. Image processing: Alyssa Pagan (STScI)