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.

The journey of Earth’s radio signals began over a century ago, following the first intentional broadcast by Reginald Aubrey Fessenden in 1906. These signals have been traveling across the Milky Way ...

SPACE (KXAN) — Radio signals are coming from somewhere within our sun and NASA wants to find out from where. On July 9, the space administration will launch the first mission designed to locate these ...

Morse code transmits information through sequences of dots, dashes, and spaces, allowing messages to travel long distances without spoken language. Samuel F.B. Morse developed the original system in ...

When astronomers turn our radio telescopes out towards space, we sometimes detect sporadic bursts of radio waves originating from across the vast expanse of the universe. We call them “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This is an archived article and the information in the article may be outdated.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 ...

CURIE will investigate where solar radio waves originate in coronal mass ejections, like this one seen in 304- and 171-angstrom wavelengths by NASA’s Solar Dynamics Observatory. (Credit: NASA/Goddard ...

(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 ...