What in the world is it?
|Don’t peek at the answer until you’ve given this a good try! Then, scroll down a bit and the truth will be revealed to you.
A dusty marble? A neon globe? Well, sort of. What you’re seeing is a satellite image of the Earth – of the Asia region specifically. Actually it’s a combination of several satellite images taken both in the day and night, so that scientists can see continental features. The bright dots are city lights, which reveal population centers. By monitoring images like these over time, researchers can monitor population explosions, among other things.