How Early Astronomers Managed to Measure Cosmic Distances

The solar system, let alone the Universe, is too big to measure by any conventional means. So how did early astronomers manage to do it without all the fancy kit scientists now have at their disposal? Read More >>

How to Measure Distance in Space

Space is expansive: looking up to the stars, it can sometimes feel like everything sits on a single, two-dimensional sheet held up above us. It doesn't, of course—so how do we measure how far away things are? Read More >>

Google Maps Update Lets You Measure Distances (or Aimlessly Doodle)

Ever try measuring the straight-line distance between two points on Google Maps? You had to hold some object or appendage up to the little scale, then eyeball-measure the distance on your screen. What a mess. No more—a new update puts the task a right-click away. Also, you can doodle with it. Read More >>