On This Day: Soviet Union launches Sputnik 1 - UPI.com
The Sputnik 1 Launch: The First Artificial Satellite To Enter Earth's Orbit | Mach | NBC News - YouTube
The Rocket That Launched Sputnik and Started the Space Race
Remembering Sputnik - The satellite that began the Space Race - NASASpaceFlight.com
Remembering Sputnik - The satellite that began the Space Race - NASASpaceFlight.com
Sputnik Rocket: Reaching orbit, in style! | The Space Techie
4 October 1957 – Sputnik 1 – Explaining Science
How Sputnik 1 launched the space age
Sputnik 1 (PS-1 #1) - Gunter's Space Page
Sputnik 1 - Wikipedia
What was Sputnik One? - Universe Today
Sputnik 1 | NASA
How a Drunk Driver Led to the Birth of Russia's Sputnik 1 | by Wilson da Silva | Science and Philosophy | Medium
Sputnik
USSR Launches Sputnik
The Rocket That Launched Sputnik and Started the Space Race
The “Simplest Satellite” That Opened Up the Universe | American Scientist
USSR launches Sputnik-3
File:Sputnik 1.jpg - Wikimedia Commons
When Soviets Launched Sputnik, C.I.A. Was Not Surprised - The New York Times
Sputnik (rocket) - Wikipedia
History of Sputnik. Explorer. Vanguard. 1957. 1958. First space launch. Artificial satellite.
60 years ago, Soviets launch Sputnik 3 | NASA
Sputnik at 60: Read Original 1957 Coverage of Launch | Time
Sputnik | Satellites, History, & Facts | Britannica
Sputnik Launched
