A camera affixed to the International Space Station recently spotted some curious symbols amid a barren desert landscape.

Apollo 8, 1968. The first view by human eyes of Earth. The following is the transcript of the conversation between the ...

Widely acknowledged as one of the most widely distributed photographic images in existence, the "Blue Marble" was ...

I've often wished we could all have a brief moment of hurtling around the Earth, not to posture or preen, but to show the opposite — we are small, we are humble, and we need to fiercely care for the ...