Leonardo Testi and team investigate the initial conditions for planet formation in this special astronomy focus ...

Airlines have long treated thunderstorms, snow and volcanic ash as the main reasons to slow or stop flights. Now a new hazard ...

For more than a century, scientists have wondered why physical structures like blood vessels, neurons, tree branches, and ...

You can't see, feel, hear, taste or smell them, but tiny particles from space are constantly raining down on us.

This matters because intonation (the rise and fall of speech that conveys emotion, emphasis, and intent) can flip meaning ...

A black hole is truly one of the most mysterious celestial phenomena known to man. Not only are they physically shrouded in ...

Galileo used an inclined plane to determine the rate of acceleration due to Earth's gravity. In one experiment, he changed the pitch of the plane, but not its height.