Scientists Say They’ve Tested a Way to Get to Alpha Centauri in Just 20 Years
Yahoo Tech • • science
Key Points:
- Researchers at Texas A&M University have developed a new laser propulsion method using micron-scale "metajets" with metasurfaces that enable precise three-dimensional movement when illuminated by laser light.
- This technology could potentially accelerate spacecraft to reach Alpha Centauri in about 20 years, a significant reduction from current travel times of hundreds or thousands of years.
- The propulsion relies on light momentum transfer, a principle similar to solar sails, but with enhanced maneuverability and scalability based on laser power rather than device size.
- While demonstrated in fluid environments on a microscopic scale, the team aims to test the concept in space's microgravity to evaluate its practical application for interstellar travel.
- The approach could also be applied to various scales, from microrobots to large interstellar light sails, though many technical challenges and feasibility questions remain.
