The very definition of a crystal relies on the notion of symmetry: the atoms line up in highly ordered, repeating honeycomb patterns, and that symmetry should be evident whichever way you look at it.

For almost a decade, thanks to an increased effort in exoplanet hunting such as NASA's Kepler mission, astronomers have identified a lot of Earth-like planets outside our solar system. However, they ...

Earth is on an orderly path around the sun, orbiting in nearly the same plane as our star’s equator. In 2008, however, astronomers began finding worlds in other solar systems that sail far above and ...

The words “black hole” generally bring to mind destruction and an end to all ends. No-one – in fact or fiction – has considered the possibility of stable habitats existing within black holes. But that ...

Andromeda This image of the galaxy was taken with a small telescope and includes two dwarf galaxies. (Courtesy: David (Deddy) Dayag/CC BY-SA 4.0) New physics, in the form of a “fifth force”, could be ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...