Michio Kaku: Why We Can't "Fire the Photon Torpedoes" | Big Think | Summary and Q&A

543.1K views
β€’
May 31, 2011
by
Big Think
YouTube video player
Michio Kaku: Why We Can't "Fire the Photon Torpedoes" | Big Think

TL;DR

Photon engines face practical engineering challenges, while laser rockets using water for thrust could revolutionize space travel.

Install to Summarize YouTube Videos and Get Transcripts

Key Insights

  • 😘 Photon engines in space travel face challenges due to the low momentum of photons.
  • πŸ‘Ύ Laser rockets using water as propellant offer a potential solution to the cost and efficiency issues in space travel.
  • πŸš€ Space travel costs are primarily driven by the heavy weight of rocket fuel, making alternative propulsion methods like laser rockets essential.
  • πŸ‘Ύ Utilizing lasers to propel rockets with water vaporization could revolutionize the space industry.
  • πŸ‘Ύ The efficiency of space travel could increase significantly by eliminating the need for heavy rocket fuel through laser propulsion.
  • 😁 Propelling rockets with laser beams and water vaporization shows promise in reducing the costs associated with space missions.
  • πŸ‘Ύ Innovative propulsion methods, like laser rockets, have the potential to change the landscape of space travel by addressing cost and efficiency issues.

Questions & Answers

Q: What are the practical problems with photon engines in space travel?

Photon engines face challenges due to the low momentum of photons, requiring massive solar sails or laser engines for propulsion, making practical implementation difficult.

Q: How do laser rockets using water for thrust revolutionize space travel?

Laser rockets eliminate the need for heavy rocket fuel by using water as propellant. This innovative approach could drastically reduce the cost of space travel while increasing efficiency.

Q: How do laser rockets work using water for thrust?

Laser rockets operate by having lasers on Earth fire at a projectile containing water, which vaporizes from the laser beams, creating thrust that propels the rocket into space without carrying traditional rocket fuel.

Summary & Key Takeaways

  • Photon engines, while a fascinating concept, face practical difficulties due to the low momentum of photons.

  • Laser rockets, using water for thrust, eliminate the need for heavy rocket fuel, potentially reducing space travel costs significantly.

  • The key to efficient space travel lies in innovative propulsion methods like laser rockets.

Share This Summary πŸ“š

Summarize YouTube Videos and Get Video Transcripts with 1-Click

Download browser extensions on:

Explore More Summaries from Big Think πŸ“š

Summarize YouTube Videos and Get Video Transcripts with 1-Click

Download browser extensions on: