C/2021 A1 (Leonard), also known as Comet Leonard, will be closest to the Earth on December 13.
A widely-anticipated comet is set to fly by the Earth in mid-December and will be both the brightest comet of 2021 and likely the last one seen before the end of the year.
The comet will be closest to Earth on December 13 before finally rounding the Sun on January 3, 2022.
Comets are visually impressive sights to behold.
These icy objects – compared to more rocky asteroids – fly through space and are defined by their iconic “comas” and “tails,” which are what make the comets look bright, fuzzy and with a distinctive trail.
These are caused by outgassing, the process in which the icy comets warm and release gases as they fly close to the sun and are affected by solar radiation and solar winds.
Throughout history, comets have been seen as awe-inspiring sights, as these bright lights shine in the sky.