3 ms·

Galaxy is impractically huge. 3-dimensions is infinitely bigger than 2

• mcpackieh 3y ago
  > Galaxy is impractically huge. Yes, but also no... There are about 4x10^11 stars in the Milky Way galaxy, which from an exploration standpoint is massive. But 10^11 isn't exactly an inconceivably large number... let's suppose for the sake of argument that the development of complex multicellular life capable of creating and using radios is 'gated' by only two independent one in a million chances per star.. that's already 1 in 10^12. For 4x10^11 stars in a galaxy, that would mean the galaxy has a 2/3rds chance of not having even one star system with radio-capable life. (1 - 1/10^12) ^ (4x10^11) = 0.67