Alien civilizations may have explored the Milky Way and visited Earth already, new study claims

By Christopher Carbone | Fox News

Alien civilizations may have explored the Milky Way and visited Earth already: new study
Our Milky Way galaxy could be filled with alien civilizations, a new study claims, but we don't know because they haven't stopped by Earth for a visit in millions of years. According to a study published last month in The Astronomical Journal, extraterrestrial life might be taking its time to fully explore the galaxy, even using the movement of star systems to make this type of journey easier.

The scientists' work is the latest response to what's known as the Fermi paradox, which wonders why we have yet to detect signs of alien life. Click here to read more.