Six asteroids will pass by Earth on January 20, which happens to be Inauguration Day in the USA (via ZME Science). Fortunately, or unfortunately – depending on whether you want a nihilistic wish that 2021 should just be over – the asteroids will not collide with our planet.
According to ZME science, the nearest will pass the Earth approximately the same distance as the moon. You can see all the asteroids’ data at NASA’s Center for Near-Earth Object Studies (CNEOS).
If you’re curious about asteroids that made it close enough to Earth for NASA to take note, you can also see the information in the link above. CNEOS is an organization that “calculates high-precision orbits for near-Earth objects (NEOs), predicts their future movements, and assesses their impact hazard.”
While zombie outbreaks and cyberpunk fantasies about corporate greed are destroying humanity, currently the popular cultural visions of apocalypse, asteroids hitting the earth are another option. The Green Slime, Deep Impact and Armageddon are all movies with asteroids that pose a real existential threat to humanity. (The Green Slime is one of the good, bad movies – you don’t have to see it for the plot, but it’s a great lack of plot.)
In real history, an asteroid impact was probably one of the causes of a major extinction event on Earth. The Cretaceous-Paleogene extinction event took place more than 66 million years ago and wiped out a large number of plants and animal species, effectively ending the dinosaur era and introducing us to the current Senozoic era, also known as the age of mammals.
If you are curious what a CNEOS response to an impending asteroid looks like, go to the Hypothetical Impact Scenarios page. Note: the documents are thought exercises around a hypothetical event and are not linked to actual events.