মহাকাশ লিফট

What Is a Space Elevator?

A space elevator is a proposed megastructure connecting Earth's surface to geostationary orbit (GEO) at 35,786 km altitude via an ultra-strong cable. A climber vehicle ascends the cable carrying payload, replacing expensive rocket launches. At GEO, the orbital period matches Earth's rotation, so the cable hangs stationary. A counterweight beyond GEO keeps the cable taut through centrifugal force. The concept could reduce launch costs from $20,000/kg to under $200/kg, revolutionizing space access. Carbon nanotubes and graphene are leading material candidates, as the cable must withstand enormous tension — peaking near geostationary altitude where gravity and centrifugal forces balance.

Why does this matter? The space elevator represents the most transformative space infrastructure concept ever proposed. A single elevator could launch thousands of tons to orbit annually without burning a gram of rocket fuel. It would enable solar power satellites, orbital manufacturing, lunar and Mars missions at a fraction of current costs, and eventually make space tourism routine. The engineering challenges — materials science, cable dynamics, climber power systems, orbital debris avoidance — span nearly every field of technology. Solving them would mark humanity's transition from a planetary to a spacefaring civilization.

📖 গভীরভাবে জানুন

🎯 সিমুলেটর টিপস

📚 শব্দকোষ

🏆 মূল ব্যক্তিত্ব

🎓 শিক্ষার উৎস

• The Space Elevator: A Revolutionary Earth-to-Space Transportation System [paper]
  স্পেস এলিভেটর ধারণার সবচেয়ে বিস্তারিত প্রকৌশল সম্ভাব্যতা অধ্যয়ন (2003)
• Space Elevators: An Assessment of the Technological Feasibility [paper]
  ইন্টারন্যাশনাল একাডেমি অফ অ্যাস্ট্রোনটিক্স ব্যাপক মূল্যায়ন (2013)
• International Space Elevator Consortium [article]
  সংস্থা স্পেস লিফট গবেষণার অগ্রগতি এবং বার্ষিক সম্মেলন হোস্টিং
• Obayashi Space Elevator Project [article]
  জাপানি নির্মাণ সংস্থার 2050 স্পেস এলিভেটর প্রকল্প ওভারভিউ