WEST RUSSIA — An object travelling at speed in the Russian sky and the odd cloud left in its wake over a World Cup venue was not due to aliens.<br /><br />Citing ROSCOSMOS, the Russian space agency, the Moscow Times reports the whole thing was the re-entry trail from a launch vehicle.<br /><br />According to the Metro, a woman who posted video of the event said she'd never seen anything like it. An object can be seen travelling at speed and then going so fast, a rocket trail forms behind it in the shape of an odd cloud.<br /><br />Onlookers, were quite naturally amazed, with some speculating it maybe aliens and another adding they've arrived for the World Cup.