In its dying moments, the Blue Ghost lunar lander captured the first high-definition images of a sunset on the Moon. The lunar nightfall differs subtly from an Earthly sunset, and the images could ...

That said, it's still worth understanding the various resolutions used by TV makers and others. Here's a bit more, ahem, detail. When it comes to TVs, 4K and Ultra HD (or UHD) are referring to the ...