Elon Musk pranks about chemtrails being aliens' message

SpaceX CEO Elon Musk pulled off an April Fools' Day prank tweeting that chemtrails are actually messages from time-traveling aliens. A conspiracy theory suggests that chemtrails, the vapour trails left in the sky by jets, are sinister chemicals being sprayed by the government. He further tweeted, "Damn you, aliens! You have all this crazy tech, but can't speak English!?"