If you're looking for 4K Blu-rays to add to your collection or gift to a fan this Christmas, these are my top 12 discs that I've personally tested.

Using images from NASA’s Solar Dynamics Observatory, a new video gives an unprecedented, ultra-high-definition look at the sun using wavelengths invisible to the human eye. Video courtesy of NASA It’s ...

If you’re in the market for a new TV, there’s a good chance it will be a 4K set, or even an 8K model, with a feature called high dynamic range, or HDR for short. You should be particularly excited ...