Photo of the Day

Picture of three large telescopes at the Deimo Sky Survey in Spain
May 6, 2022

Sky Watching

A story in the February 2018 issue called "They Are Watching You" documented the use of surveillance around the globe. The subjects of surveillance range from active shooters to the night sky—demonstrated here in a photo of the Deimos Sky Survey's three telescopes in Spain.
Photograph by Luca Locatelli, Nat Geo Image Collection
Create a free account to continue and get unlimited access to hundreds of Nat Geo articles, plus newsletters.

Go Further

Subscriber Exclusive Content

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

Create your free account to continue reading

No credit card required. Unlimited access to free content.
Or get a Premium Subscription to access the best of Nat Geo - just $19