Like the Montgolfier’s balloon this Russian satelite is memorable for one reason; it shuttled the first earthling, a street dog named Laika, into orbit of the earth. On November 3, 1957 Laika passed away from overheating, surviving in space for almost 2 hours. Laika’s death led to other dogs being able to survive the journey and eventually humans. To quote Otto Lilienthal “Sacrifices must be made.”
RIP Laika.