Have you ever wondered how astronomers manage to map out the Milky Way when it's so incredibly vast? One of the most powerful tools is something called 21 cm radiation.

A widely-used online Ukrainian battlefield map appeared to show Ukrainian forces no longer in control of the town of Sudzha in Russia's Kursk region on Wednesday.

The bank transfer you made earlier, the movie you streamed last night and the video you’re viewing right now - all possible because of a vast network of undersea cables that power the global internet.

Google Maps is like our digital third eye, allowing us to see practically every swath of the Earth's surface. Now the mapping tool can take us underground, into the fiery depths of a volcano.