Elon Musk @elonmusk
@PPathole @Teslarati @13ericralph31 If we are able to make life self-sustaining on Mars, we will have passed one of the greatest filters. That then sets us up to become interstellar. Earth is ~4.5B years old, but life is still not multiplanetary and it is extremely uncertain how much time is left to become so. — PolitiTweet.org
