1957–1990 CE · selected satellite and observing milestones · Global · Science
Sputnik 1 inaugurated artificial Earth orbit in 1957; weather, communications and land-observing satellites then developed as distinct systems, while probes and observatories extended research across the Solar System and universe.
Atlas dossier · Cold War & DecolonizationFree device narration · synchronized English captions · transcript available
Why it matters
Sputnik 1 became the first artificial satellite in 1957. TIROS-1 began a dedicated U.S. weather-observation series in 1960, and Landsat 1 opened a continuing civilian land-imaging record in 1972. Communications, navigation, meteorology, Earth science and astronomy used different instruments, institutions and goals.
NASA Earth Observatory: space-based observations of Earth ↗Soviet and U.S. rivalry accelerated launch vehicles, satellites and human spaceflight, but scientific and practical results depended on international tracking, meteorological services, engineers, data archives and later national and multinational programs. A space-age story is incomplete if only astronauts and superpowers appear.
NASA: a brief history of space applications and Landsat ↗Hubble’s 1990 launch closes this selected survey as the start of a long-running orbital-observatory program. It does not mark the end of Earth observation or discovery beyond Earth. Later missions, repairs, data processing and worldwide research communities continue the history.
Smithsonian National Air and Space Museum: space-science collection ↗A visual presentation accompanying this entry. Read each image’s attribution to distinguish archival records, later depictions and reconstructions.
Rights-cleared archival or official image · CC BY-SA 3.0
Sputnik.jpg — Wikimedia Commons contributor; CC BY-SA 3.0; via Wikimedia Commons
Source and reuse terms ↗ · Read the licence ↗Interpretation note
This dossier distinguishes the event’s basic chronology from later arguments about meaning, responsibility and legacy. When comparing religious, national, Indigenous or scholarly interpretations, consult the primary and institutional sources above alongside peer-reviewed historical work.
Elsewhere in the world
6 March 1957 CE · Gold Coast becomes Ghana · AfricaGhanaian independenceThe British colony of the Gold Coast became independent Ghana on 6 March 1957 after strikes, elections, constitutional negotiation and mass anticolonial organizing led through—but not confined to—the Convention People’s Party.
1955–1968 CE · selected mass-movement and federal-law phase · AmericasCivil Rights MovementA selected phase of a much longer Black freedom struggle challenged segregation, disenfranchisement and racial violence through litigation, boycotts, direct action, community organizing and mass political mobilization.
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