Category: Space

Laika, the first dog in space, in the Sputnik 2 capsule. (Credit: Sovfoto/UIG via Getty Images)

What was the first animal in space?

Though far less famous than later non-human astronauts, the first animals in space were a group of fruit flies, launched to an altitude of 42 miles at the ...

What are wormholes?

Wormholes connecting different points in space and time might seem like the stuff of science fiction, but these mysterious tunnels are an actual feature of ...

Can you really see the Great Wall of China from space?