Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Scientists are calling for a lunar quarantine facility where samples from Mars, the Moon, and beyond would be examined before being brought to Earth. They warn that even a tiny alien microorganism ...

With new technologies come new opportunities. And that is especially true in astronomy—with every new advanced telescope, we ...

Gun control with no guns? How is that possible? Join Dan and Neil to find out.