| Space science is the study of everything above and | | | | competition for geopolitical rivalries such as the Cold |
| beyond the surface of the Earth, from Earth's | | | | War. |
| atmosphere to the very edges of the universe. | | | | The first human spaceflight was Vostok 1 (East 1), |
| Space Technology refers to the technology in | | | | carrying 27 year old cosmonaut Yuri Gagarin on April |
| satellites and ground systems used by space | | | | 12, 1961. The spacecraft completed one orbit around |
| scientists to study the universe (looking up) and the | | | | the globe, lasting about 1 hour and 48 minutes. |
| earth (looking down), or to deliver services to users | | | | Gagarin's flight resonated around the world; it was a |
| on the ground. The vast majority of satellites are | | | | demonstration of the advanced Soviet space |
| launched into space to provide services to people on | | | | program and it opened an entirely new era in space |
| Earth. | | | | exploration — human spaceflight. |
| Satellite is an object which has been placed into orbit | | | | Space Shuttle Discovery (Orbiter Vehicle Designation: |
| by human endeavor. Such objects are sometimes | | | | OV-103) is one of the three currently operational |
| called artificial satellites to distinguish them from | | | | orbiters in the Space Shuttle fleet of NASA, the |
| natural satellites such as the Moon. Space is the | | | | space agency of the United States. (The other two |
| property of the universe, in which matter is physically | | | | are Atlantis and Endeavour.) When first flown in |
| extended and objects have positions relative to one | | | | 1984, Discovery became the third operational orbiter, |
| another. | | | | and is now the oldest orbiter in service. Discovery |
| In classical mechanics, space was treated as being | | | | has performed both research and International Space |
| separate from time and is thought of as one of the | | | | Station (ISS) assembly missions. |
| few fundamental physical quantities. In Isaac | | | | Space technology is technology that is related to |
| Newton's view space was absolute, and held that it | | | | entering space, maintaining and using systems during |
| exists permanently and independently of whether | | | | spaceflight and returning people and things from |
| there is any matter in the space or moving through it. | | | | space. |
| Space exploration is the use of astronomy and space | | | | Space technology has a huge impact on the |
| technology to explore outer space. Physical | | | | everyday lives of people; and something as simple as |
| exploration of space is conducted both by human | | | | checking the weather or watching satellite television |
| spaceflights and by robotic spacecraft. Space | | | | or receiving a parcel guided by satellite, it touches |
| exploration has often been used as a proxy | | | | most people's lives on any given day. |