A team of astronomers has confirmed the detection of a natural cosmic body passing through our solar system. Unlike long-held expectations of “little green men,” these objects are actually comets and asteroids originating from elsewhere in the galaxy. They’re not visiting but rather making a brief stop as they journey through the Milky Way.
Speculation about their existence dates back years, but their discovery was confirmed on October 2017. Observations over just a few nights revealed the object’s exceptional speed, leading astronomers to conclude it had originated from another star system. This marks our first known interstellar visitor, providing new insights into the vast expanse of our galaxy.
Source: https://www.scientificamerican.com/article/interstellar-meteors-hit-earth-all-the-time-but-still-elude-astronomers