The crucial and groundbreaking Gemini missions came after the swaggering heroics of the Mercury flights, immortalized in book ...

The Strategic Defense Initiative is remembered as a controversial Reagan-era project to create a space-based missile defense program, but what were its far-reaching consequences for space security?

Roughly 6,800 miles separate humanity's past and future on the surface of the moon. It’s the approximate distance between the Sea of Tranquility—where Apollo 11’s Neil Armstrong and Buzz Aldrin first ...