Are we alone in the universe? There are good reasons to suspect that we have company.
After all, the universe is exceptionally large, with possibly billions of Earth-like planets in our Milky Way galaxy, which is but one of trillions of galaxies in the universe.
The ingredients for life, as far as we know, are common. And humans on Earth have proven life is capable of evolving to a point of technological complexity which could make our presence visible to anyone out there looking.
But could we recognize such a signal if it floated past our planet? Researchers are deploying new technology to aid us in that ongoing search.
