Health.Zone Web Search

Search results

  1. Results from the Health.Zone Content Network
  2. List of USA satellites - Wikipedia

    en.wikipedia.org/wiki/List_of_USA_satellites

    List of USA satellites. This is a list of satellites and spacecraft which have been given USA designations by the United States Air Force. These designations have been applied to most United States military satellites since 1984, and replaced the earlier OPS designation. As of June 2022, USA designations have been assigned to 331 space satellites.

  3. List of satellite map images with missing or unclear data

    en.wikipedia.org/wiki/List_of_satellite_map...

    This is a list of satellite map images with missing or unclear data. Some locations on free, publicly viewable satellite map services have such issues due to having been intentionally digitally obscured or blurred for various reasons of this. [1] For example, Westchester County, New York asked Google to blur potential terrorism targets (such as ...

  4. Satellite imagery - Wikipedia

    en.wikipedia.org/wiki/Satellite_imagery

    Satellite imagery. The first images from space were taken on the sub-orbital V-2 rocket flight launched by the U.S. on October 24, 1946. Satellite image of Fortaleza. Satellite images (also Earth observation imagery, spaceborne photography, or simply satellite photo) are images of Earth collected by imaging satellites operated by governments ...

  5. Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Global_Positioning_System

    The Global Positioning System ( GPS ), originally Navstar GPS, [2] is a satellite-based radio navigation system owned by the United States government and operated by the United States Space Force. [3] It is one of the global navigation satellite systems (GNSS) that provide geolocation and time information to a GPS receiver anywhere on or near ...

  6. List of GPS satellites - Wikipedia

    en.wikipedia.org/wiki/List_of_GPS_satellites

    Samples of three GPS satellites' orbits over a five-year period (2013 to 2018) USA-242 · USA-239 · USA-151 · Earth As of 15 August 2023, 83 Global Positioning System navigation satellites have been built: 31 are launched and operational, 4 are unhealthy or in reserve, 41 are retired, 2 were lost during launch, and 1 prototype was never launched. 4 Block III satellites have completed ...

  7. Geostationary Operational Environmental Satellite - Wikipedia

    en.wikipedia.org/wiki/Geostationary_Operational...

    The launch of GOES-N, which was renamed GOES-13 after attaining orbit. The Geostationary Operational Environmental Satellite (GOES), operated by the United States' National Oceanic and Atmospheric Administration (NOAA)'s National Environmental Satellite, Data, and Information Service division, supports weather forecasting, severe storm tracking, and meteorology research.

  8. Landsat program - Wikipedia

    en.wikipedia.org/wiki/Landsat_program

    It is a joint NASA / USGS program. On 23 July 1972, the Earth Resources Technology Satellite was launched. This was eventually renamed to Landsat 1 in 1975. [1] The most recent, Landsat 9, was launched on 27 September 2021. The instruments on the Landsat satellites have acquired millions of images. The images, archived in the United States and ...

  9. Satellite navigation - Wikipedia

    en.wikipedia.org/wiki/Satellite_navigation

    A satellite navigation or satnav system is a system that uses satellites to provide autonomous geopositioning. A satellite navigation system with global coverage is termed global navigation satellite system ( GNSS ). As of 2024, four global systems are operational: the United States 's Global Positioning System (GPS), Russia 's Global ...