If other stars replaced our Sun: Incredible Roscosmos video (Pt2)
VIDEO COURTESY: ROSCOSMOS http://www.tvroscosmos.ru/4683/ What if the Sun were to be replaced by the other stars, like Alpha Centauri, Sirius, Arcturus, … source
If other planets replaced our Moon: Incredible Roscosmos video (Pt1)
VIDEO COURTESY: ROSCOSMOS http://www.tvroscosmos.ru/4683/ What if other planets were as close as the Moon to us? Amazing Roscosmos (Russian Federal Space Agency) video reveals how Mars, Jupiter,… source