How can we reach space without a rocket? This video explores the space elevator concept, a massive cable stretching from Earth to orbit. Engineers discuss new materials like carbon nanotubes and the ...

For decades, the staggering cost of escaping Earth's gravity has limited our reach into space. Sending just one kilogram into orbit can run tens of thousands of dollars. Costs climb even higher for ...

Even as the price of space flight came down dramatically in the 2030s, the environmental and financial cost of using chemical rockets to escape Earth’s gravity held back human expansion to the moon ...