Earth observation

Assembled from 25 blocks · 3 evidence · 24 related

1. Story
2. Commercial remote sensing: optical and radar imagery of the Earth's surface, and the analytics built on it. Its economic peculiarity is that its most consequential datasets are free. The United States opened the entire Landsat archive at no charge in 2008, and the European Union's Copernicus programme has distributed Sentinel data under a free, full and open policy since Sentinel-1A began operations in 2014 — between them supplying a global, calibrated, continuously updated baseline that no commercial operator could profitably duplicate. Commercial value therefore concentrates where public missions do not reach: sub-metre resolution, daily or sub-daily revisit, all-weather synthetic aperture radar, rapid tasking, and the interpretation layer above the pixels. The largest single customer is government, principally defence and intelligence, which distorts the sector's appearance as a commercial market. Measured against satellite communications or navigation, Earth observation data and services remain a small industry — units of billions of dollars a year rather than tens or hundreds — a fact that sits awkwardly beside the sector's prominence in space-economy narratives. Not a place.
3. Knowledge
4. Satellite communications
5. Earth observation
6. Connections
7. Satellite communications
8. Copernicus
9. Planet Labs
10. ERTS-1, later Landsat 1, begins the civil land-imaging record
11. The United States opens the Landsat archive at no charge
12. Sentinel-1A launches and Copernicus data becomes free and open
13. ITU spectrum and orbital-slot regulation
14. Earth observation
15. Low Earth orbit broadband constellations
16. Eutelsat OneWeb
17. Space insurance
18. The Communications Satellite Act creates a commercial satellite operator
19. Telstar 1 relays the first live transatlantic television
20. Intelsat I (Early Bird) becomes the first commercial geostationary satellite
21. A geostationary satellite antenna fails to deploy, triggering a record insurance year
22. Evidence
23. Supports the Landsat launch chronology from 1972 and the 2008 decision to distribute the full archive at no charge, together with the subsequent increase in scene distribution. V55 verification basis: usgs.gov was not retrievable in this session; the distribution increase is given as orders of magnitude rather than a number.
24. Establishes that Copernicus Sentinel data is made available free, fully and openly, including for commercial reuse. V55 verification basis: the regulations were not retrieved in this session and their numbers are deliberately omitted rather than cited from memory; the policy substance is stated from author knowledge.
25. Supports the finding that GNSS downstream revenue — devices, chipsets and services — runs to hundreds of billions of euros a year while Earth observation data and services revenue is smaller by roughly two orders of magnitude. V55 verification basis: not retrieved in this session; the contrast in magnitude is stated, the current-edition figures are not.