The Space Age is a time period encompassing the activities related to the Space Race, space exploration, space technology, and the cultural developments influenced by these events. The Space Age is generally considered to have begun with Sputnik (1957).
The Space Age began with the development of several technologies that converged with the October 4, 1957 launch of Sputnik 1 by the Soviet Union. This was the world's first artificial satellite, orbiting the Earth in 98.1 minutes and weighing 83 kg (183 lb). The launch of Sputnik 1 ushered in a new era of political, scientific and technological achievements that became known as the Space Age.
The Space Age was characterized by rapid development of new technology in a close race mostly between the United States and the Soviet Union. Rapid advances were made in rocketry, materials science, computers and other areas. Much of the technology originally developed for space applications has been spun off and found additional uses, memory foam is an example of this.
The Space Age reached its peak with the Apollo program, that captured the imagination of much of the world's population. The landing of Apollo 11 was watched by over 500 million people around the world and is widely recognized as one of the defining moments of the 20th century. Since then, public attention has largely moved to other areas.
In the United States, the Challenger disaster in 1986 marked a significant decline in manned shuttle launches. Following the disaster, NASA grounded all shuttles for safety concerns until 1988. During the 1990s funding for space related programs fell sharply as the remaining structures of the now dissolved Soviet Union disintegrated and NASA no longer had any direct competition.
Since then participation in space launches has increasingly widened to more governments and commercial interests. Since the 1990s, space exploration and space-related technologies gained a perception by many people of being commonplace.
Although commonly referred to beginning on October 4, 1957 with the launch of Sputnik 1 by the Soviet Union, the technology behind the space age and subsequent space race began back in the 1930s. With the technological advancements, innovations, and inventions common in Nazis Germany related to war, their creation of a missile capable of striking London became their primary goal and would lay the groundwork for future space technologies and exploration. 
Referred to as the most important rocket developer during the twentieth century, Dr. Wernher von Braun worked first for Germany, and later the United States. He first joined the German Society for Space Travel in 1928 and later joined the German army in 1932 to develop liquid-fuel rockets. He and his teams' work on the V-2 rocket became the basis for both the United States' and the Soviet Unions' intercontinental ballistic missiles and later space programs. 
Also referred to as the A-4 rocket in Germany, the V-2 rocket was introduced by the German army nearing the end of the war. Fueled by burning a mixture of liquid oxygen and alcohol, the V-2 was capable of 3,500 miles per hour. With an effective range of 200 miles with an approximate arch of 60 miles, the V-2 missile was capable of striking at Southern England from bases in the low land countries. Roughly 3,200 - 3,600 V-2 missiles were deployed against Allied targets during the course of the war, with about 25% of all missiles launched failing due to air bursts. 
In the early 21st century, the Ansari X Prize competition was set up to help jump start private spaceflight, which was won by Space Ship One in 2004, becoming the first spaceship not funded by a government agency.
Several countries now have space programs; from related technology ventures to full-fledged space programs with launch facilities. There are many scientific and commercial satellites in use today, with thousands of satellites in orbit, and several countries have plans to send humans into space. Some of the countries joining this new race are France, India, China and Israel all of which have employed surveillance satellites. There are several other countries with space agencies although not as extensive to include the United Kingdom, Brazil, Germany, Ukraine and Spain.
As for the United States space program, NASA is currently constructing a deep-space crew capsule named the Orion. NASA's goal with this new space capsule is to carry humans to Mars. The Orion spacecraft is due to be completed in the early 2020s. NASA is hoping that this mission will be a kick starter that will "usher in a new era of space exploration."
Another major factor that is affecting the current Space Age is the privatization of space flight. There are two major companies, Boeing and SpaceX, that are taking a large part in research and innovation. Elon Musk, the owner of SpaceX, has stated an ultimate goal of putting a colony of 1 million people on Mars and in 2018 they launched their largest rocket, bringing this goal closer to reality.
|June 20, 1944||Artificial object in outer space, i.e. beyond the Kármán line||V-2 rocket, test flight||- N/A||Germany|
|October 24, 1946||Pictures from space (105 km)||U.S.-launched V-2 rocket from White Sands Missile Range, New Mexico.||- N/A||United States|
|February 20, 1947||Animals in space||U.S.-launched V-2 rocket on 20 February 1947 from White Sands Missile Range, New Mexico.||- fruit flies||United States|
|October 4, 1957||Artificial satellite||Sputnik 1||- N/A||Soviet Union|
|November 3, 1957||Animal in orbit||Sputnik 2||Laika the dog||Soviet Union|
|January 2, 1959||Lunar flyby, and first spacecraft to achieve a heliocentric orbit||Luna 1||- N/A||Soviet Union|
|September 12, 1959||Impacted on the Lunar surface; thereby becoming the first human object to reach another celestial body||Luna 2||- N/A||Soviet Union|
|October 7, 1959||Pictures of the far side of the Moon||Luna 3||- N/A||Soviet Union|
|April 12, 1961||Human in space||Vostok 1||Yuri Gagarin||Soviet Union|
|May 5, 1961||Manual orientation of manned spacecraft and first human space mission that landed with pilot still in spacecraft, thus the first complete human spaceflight by FAI definitions||Freedom 7||Alan Shepard||United States|
|December 14, 1962||Successful flyby of another planet (Venus closest approach 34,773 kilometers)||Mariner 2||- N/A||United States|
|March 18, 1965||Spacewalk||Voskhod 2||Alexey Leonov||Soviet Union|
|December 15, 1965||Space rendezvous||Gemini 6A & Gemini 7||Schirra, Stafford, Borman, Lovell||United States|
|February 3, 1966||Soft landing on the Moon by a spacecraft||Luna 9||- N/A||Soviet Union|
|March 1, 1966||First human-made object to impact another planet||Venera 3||- N/A||Soviet Union|
|March 16, 1966||Orbital docking between two spacecraft||Gemini 8 & Agena Target Vehicle||Neil Armstrong, David Scott||United States|
|April 3, 1966||Artificial satellite of another celestial body (other than the Sun)||Luna 10||- N/A||Soviet Union|
|October 18, 1967||First spacecraft to perform transmit data from the atmosphere of another planet||Venera 4||- N/A||Soviet Union|
|December 21-27, 1968||Humans to leave the Earth's influence, orbiting the Moon||Apollo 8||Borman, Lovell, Anders||United States|
|July 20, 1969||Humans land and walk on another celestial body (Moon)||Apollo 11||Neil Armstrong, Buzz Aldrin||United States|
|December 15, 1970||First telemetry from the surface of another planet||Venera 7||- N/A||Soviet Union|
|April 19, 1971||Operational space station||Salyut 1||- N/A||Soviet Union|
|June 7, 1971||Resident crew||Soyuz 11||Georgy Dobrovolsky, Vladislav Volkov, Viktor Patsayev||Soviet Union|
|July 20, 1976||Pictures from the surface of Mars||Viking 1||- N/A||United States|
|April 12, 1981||Reusable orbital spaceship||STS-1||Young, Crippen||United States|
|February 19, 1986||Long-duration space station||Mir||- N/A||Soviet Union|
|February 14, 1990||Photograph of the whole Solar System||Voyager 1||- N/A||United States|
|November 20, 1998||Current space station||International Space Station||- N/A||United States|
|August 25, 2012||Artificial space probe in interstellar space||Voyager 1||- N/A||United States|
|November 12, 2014||Artificial probe to make a planned and soft landing on a comet (67P/Churyumov-Gerasimenko)||Rosetta||- N/A||European Space Agency|
|July 14, 2015||Nation to have its space probes to explore all of the nine major planets recognized in 1981||New Horizons||- N/A||United States|
|December 20, 2015||Vertical landing of an orbital rocket booster on a ground pad.||Falcon 9 flight 20||- N/A||United States|
|April 8, 2016||Vertical landing of an orbital rocket booster on a floating platform at sea.||SpaceX CRS-8||- N/A||United States|
|March 30, 2017||Relaunch and second landing of a used orbital rocket booster.||SES-10||- N/A||United States|
Since the aforementioned V-2 rocket flight was undertaken in secrecy, it was not public knowledge for many years afterward. Further, the German launches, as well as the subsequent sounding rocket tests performed in both the United States and the Soviet Union during the late 1940s and early 1950s, were not considered significant enough to start a new age because they did not reach orbit. Having a rocket powerful enough to reach orbit meant that a nation had the ability to place a payload anywhere on the planet, or to use another term, possessed an intercontinental ballistic missile. The fact that after such a development nowhere on Earth was safe from a nuclear warhead is why the orbital standard is commonly used to define when the space age began.
The Space Age is considered to have influenced:
To space and back, in less than nine minutes? Hello, future.