From the Vostok to the Mercury, we take a look at some of the spacecraft responsible for keeping astronauts and cosmonauts safe as they entered the final frontier. And we also take a moment to reflect upon Laika, the first Earth organism to go into orbit.Learn more about advertising on the HowStuffWorks podcasts at www.howstuffworks.com/advertisers.htmAnd to learn about your ad choices when listening to podcasts, visit https://www.howstuffworks.com/privacy.htm#ad-choices