A stellar concert is playing out in the night sky, and scientists are learning how to listen to it like never before. Deep inside stars, sound waves move through hot gas, creating vibrations.

Read the latest research on the importance of vitamin D for health, symptoms of vitamin D deficiency, suggested dosages and more.

What the "D" in D-Day actually stands for has been a source of debate almost from the time that the Allies first landed on the French coast.

The functions of the cranial nerves are sensory, motor, or both. Sensory cranial nerves help a person see, smell, and hear. Motor cranial nerves help control muscle movements in the head and neck.

The types of teeth are incisors, canines, premolars, and molars, and each serves a different purpose. Learn more about the types of teeth in this article.

By the conclusion of the trans-Atlantic slave trade at the end of the 19th century, Europeans had enslaved and transported more than 12.5 million Africans.

The International Nuclear and Radiological Event Scale (INES) is a tool for communicating the safety significance of nuclear and radiological events to the public.

The Mathematica notebook SpacetimeDiagrams.nb provides a comprehensive illustration of special-relativistic phenomena using a spacetime diagram with two frames of reference, S and S'. This includes: A ...