Space exploration - Satellite, Telecommunications, Astronomy

space exploration

Table of Contents

Introduction
Overview of recent space achievements
- Motivations for space activity
- Major milestones
- Significant milestones in space exploration
History of space exploration
- Prelude to spaceflight
  - Precursors in fiction and fact
    - Tsiolkovsky
    - Goddard
    - Oberth
    - Other space pioneers
  - Early rocket development
    - Germany
    - United States
    - Soviet Union
  - Preparing for spaceflight
- From Sputnik to Apollo
  - The first satellites
  - Development of space organizations
    - United States
    - Soviet Union
    - Europe
    - Japan
    - China
    - International participation
    - Involvement of industry
  - The first human spaceflights
    - Vostok
    - Mercury
    - Gemini and Voskhod
    - Soyuz
  - The race to the Moon
    - The American commitment
    - The Soviet response
    - Interim developments
    - The Apollo lunar landings and Apollo-Soyuz
- Orbiting space platforms
  - Space stations
  - International space endurance records
  - Summary of space stations launched since 1971
  - The space shuttle
Human beings in space: debate and consequences
- Risks and benefits
- Selecting people for spaceflights
- Biomedical, psychological, and sociological aspects
Science in space
- Solar and space physics
- Solar system exploration
- Exploring the universe
- Microgravity research
- Observing Earth
Space applications
- Meteorology
- Positioning, navigation, and timing
- Military and national security uses of space
- Satellite telecommunications
- Remote sensing
- Commercial space transportation
- New commercial applications
Issues for the future
Chronology of crewed spaceflights
- Crewed spaceflights, 1960–69
- Crewed spaceflights, 1970–79
- Crewed spaceflights, 1980–89
- Crewed spaceflights, 1990–99
- Crewed spaceflights, 2000–09
- Crewed spaceflights, 2010–2019
- Crewed spaceflights, 2020–

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Although some early space experiments explored the use of large orbiting satellites as passive reflectors of signals from point to point on Earth, most work in the late 1950s and early ’60s focused on the technology by which a signal sent from the ground would be received by satellite, electronically processed, and relayed to another ground station. American Telephone and Telegraph, recognizing the commercial potential of satellite communications, in 1962 paid NASA to launch its first Telstar satellite. Because that satellite, which operated in a fairly low orbit, was in range of any one receiving antenna for only a few ...(100 of 22189 words)

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