Technology
Space Elevators Could Totally Work—if Earth Days Were Much Shorter
Suppose you could speed up Earth’s rotation so that a day was only half...
Technology
How to Run on the Moon
When the elevator is stopped, the two forces are equal and opposite, and the...
Technology
New Doc Explores the Pitfalls of Colonizing Space
The experiment was failing. Nelly Ben Hayoun-Stépanian was in a cave in Spain, one...
Technology
The Tantalizing Mystery of the Solar System’s Hidden Oceans
And yet, defiantly, these alien seas remain liquid. A Mirror-Wrapped Ocean Scientists suspect that...
