Add Yahoo as a preferred source to see more of our stories on Google. Small drones can be hard to track at night. Kevin Carter/Getty Images The recent spate of unidentified drone sightings in the U.S.

A recent SETI Institute study suggests that space weather could blur and weaken extraterrestrial radio signals long before ...

Add Yahoo as a preferred source to see more of our stories on Google. Illustration: MH370 plane on blue background with radio signals being emitted around itt Transmissions from amateur radio ...

When the New York Times first wrote about "mysterious radio waves" from the cosmos in 1933, they made sure to note one fundamental caveat: "No Evidence of Interstellar Signaling." Indeed, the radio ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Some of this recent increase in activity may ...

(The Conversation) – The recent spate of unidentified drone sightings in the U.S., including some near sensitive locations such as airports and military installations, has caused significant public ...