There's a lot more to Earth than meets the eye. Far from being just a roundish rock barreling through space, our planet is composed of several layers held together by intense forces of gravity. Our ...

Here’s what you’ll learn when you read this story: Usually, geologic layers build on one another, with younger rocks piling on top of older ones. A new study, however, shows that this process is ...

Atomic oxygen has been measured with high precision for the first time using the OSAS-B spectrometer on a stratospheric balloon. The measurements provide important data for atmospheric and climate ...