3 ms·

Helium's lifting capability is proportional to the density of the atmosphere, which is very low on Mars.

• bloopernova 3y ago
  Is it viable to use vacuum instead of helium?
  • nilsherzig 3y ago
    Wouldn't you need something with some amount of pressure to stop the "shell" you plan to float from collapsing?
  • anticensor 3y ago
    What if we use hydrogen, which is halfway between helium and vacuum?
• deadbabe 3y ago
  Hydrogen it is.
  • M95D 3y ago
    Hydrogen leaks.