Photo of the Day

Picture of a multi-colored hot spring in Yellowstone National Park from above
March 1, 2022

Grand Prismatic

An aerial view shows the vibrant colors of Grand Prismatic Spring in Yellowstone National Park. The spring is 370 feet in diameter, and can reach up to a temperature of 189 °F.
Photograph by Michael Nichols, Nat Geo Image Collection

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