21 ms·

How will they contact us? We need Galactical mailbox. And you don't know how to build one unless you already have one.

• krapp 4y ago
  Earth's galactic mailbox is located near our local planning department in Alpha Centauri, only four light years away.
  • tmtvl 4y ago
    We should probably check it out just in case they plan to build a hyperspatial express route through our star system.
    • hulitu 4y ago
      " ‘I don’t know’ said the voice on the PA, ‘apathetic bloody planet, I’ve no sympathy at all.’ "