What are the issues with the Bohr model of the atom (Neils Bohr)? Some issues with this mode helped early physicists invent and develop the discipline of quantum mechanics.<br/>

This video is about the lifecycle of a star but did you know that each star starts from a cloud of dust and hydrogen gas?

The Theatre of Dionysus Eleuthereus is a major theatre in Athens, built at the foot of the Athenian Acropolis. Dedicated to Dionysus, the god of plays and wine (among other things), the theatre could seat as many as 17,000 people with...

Black holes are regions in space and time with an incredibly strong gravitational pull. Nothing, not even light, can escape a black hole. While we cannot observe them directly, scientists study the particles and radiation being drawn...

A black hole is a celestial body or simply a place in space where the gravitational pull is so high that nothing, not even light can escape it. This is why it's completely black, and hence it's called a black hole. A black hole's...

Breaking the bottom out of a glass bottle by hitting the top is a challenging trick, but involves a ton of physics. The explanation is related to cavitation - a process seen in the Mantis Shrimp attack, head injuries and pouring honey!

George H. W. Bush had a pretty extensive resume, and after eight years as Reagan's Vice President, he got his turn in the hot seat. He served just one term, which focused largely on the dissolution of the Soviet Union and the Persian...

As melting ice in Antarctica exposes land beneath it, the chain of processes set off may be capable of causing the sheet to collapse.

We've learned how stars form, and we've gone over some different types of stars, like main sequence stars, red giants, and white dwarfs. But a star will move between these categories over its lifetime. How does that happen, exactly? And...

The video showcases the inspiring story of Leon, a disabled survivor of the Haiti earthquake, who has made remarkable progress through intensive physiotherapy and rehabilitation at the Haiti hospital appeal. He has now set his sights on...