Scientists believe that 3I/ATLAS, one of the rarest comets observed, is likely not alone and that more interstellar objects may soon be discovered.
Astronomers say that advanced detection methods will reveal that such visits are more common than previously known, despite 3I/ATLAS being only the third confirmed interstellar object detected in our solar system.
As 3I/ATLAS journeys past Mars and makes its closest approach to Earth, it will be obscured from view as it travels behind the Sun.
Such discoveries are likely, thanks to advanced new detection methods.
Author's summary: Comet 3I/ATLAS approaches Earth, likely with others to follow.