Information to take with you incase you timetravel.
Go too far back and you’ll get burnt at the stake though..
(Source: sagansense, via katieelouiseee)
Information to take with you incase you timetravel.
Go too far back and you’ll get burnt at the stake though..
(Source: sagansense, via katieelouiseee)
También se puede calcular por d=R·tan(arcsec(1+h/R)), tengo entendido.
the more you know.
handy and useful