4 ms·

cough https://en.wikipedia.org/wiki/Liquid_rocket_propellant#Methane https://en.wikipedia.org/wiki/Liquid_rocket_propellant#Metha... cough

• sajithdilshan 20d ago
  It’s still a chemical reaction
  • pfdietz 19d ago
    Now estimate how much that propellant will cost per kg of payload to orbit. The problem with expensive launch in the past wasn't due to propellant cost.
• m4rtink 19d ago
  Bah, this is the way: https://en.wikipedia.org/wiki/Project_Orion_(nuclear_propulsion) https://en.wikipedia.org/wiki/Project_Orion_(nuclear_propuls... (Unfortunately if you do launch from Earth, neighbors will likely by a bit annoyed).