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Encyclopedia > Satellite photo

Satellite imagery consists of photographs of Earth or other planets made from artificial satellites. The first satellite photographs of Earth were made April 1, 1960 by the weather satellite TIROS-1. The first satellite photographs of the Moon might have been made on October 6, 1959 by the Soviet satellite Luna 3, on a mission to photograph the far side of the Moon. Earth is the third planet from the Sun. ... For other uses, please see Satellite (disambiguation) A satellite is an object that orbits another object (known as its primary). ... April 1 is the 91st day of the year (92nd in leap years) in the Gregorian calendar, with 274 days remaining. ... 1960 (MCMLX) was a leap year starting on Friday (the link is to a full 1960 calendar). ... First TV image of Earth from space TIROS-1 (or TIROS-I) was the first successful weather satellite, and the first of a series of TIROS satellites. ... Bulk composition of the moons mantle and crust estimated, weight percent Oxygen 42. ... October 6 is the 279th day of the year (280th in Leap years). ... 1959 (MCMLIX) was a common year starting on Thursday of the Gregorian calendar. ... Luna 3, an automatic interplanetary station of the Luna program, was the third spacecraft successfully launched to the Moon and the first to return images of the lunar far side. ...


In 1972 the United States started the Landsat program, the largest program for acquisition of imagery of Earth from space. Landsat 7, the most recent Landsat satellite, was launched in 1999. All satellite images produced by NASA are published by Earth Observatory and are freely available to the public. Other countries have their own satellite imaging programs. There are also private companies that provide commercial satellite imagery. 1972 (MCMLXXII) was a leap year starting on Saturday (the link is to a full 1972 calendar). ... The Landsat program is the longest running enterprise for acquisition of imagery of Earth from space. ... Landsat 7 is the latest satellite of the Landsat program. ... 1999 (MCMXCIX) was a common year starting on Friday, and was designated the International Year of Older Persons by the United Nations. ... NASA logo Listen to this article · (info) This audio file was created from an article revision dated 2005-09-01, and does not reflect subsequent edits to the article. ... The Earth Observatory is a publishing organization of the National Aeronautics and Space Administration of the United States. ...


Satellite images have many applications in agriculture, geology, forestry, regional planning, education, intelligence and warfare. Images can be in visible colours and in other spectra. There are also elevation maps, usually made with by radar imaging. Wikipedia does not yet have an article with this exact name. ... Geology (from Greek γη- (ge-, the earth) and λογος (logos, word, reason)) is the science and study of the Earth, its composition, structure, physical properties, history and the processes that shape it. ... A decidous beech forest in Slovenia. ... Regional planning is a branch of planning that deals with the design and efficient placement of activities and infrastructure across a significantly large area of land. ... Intelligence (abbreviated or ) is the process and the result of gathering information and analyzing it to answer questions or obtain advance warnings needed to plan for the future. ... For other uses of War, see War (disambiguation). ... Legend: γ = Gamma rays HX = Hard X-rays SX = Soft X-Rays EUV = Extreme ultraviolet NUV = Near ultraviolet Visible light NIR = Near infrared MIR = Moderate infrared FIR = Far infrared Radio waves: EHF = Extremely high frequency (Microwaves) SHF = Super high frequency (Microwaves) UHF = Ultrahigh frequency VHF = Very high frequency HF = High frequency...


Blue Marble was a project for mapping the visible color of the Earth with about 1-km resolution. The beautiful resulting images have become very popular in the media and among the public. The Blue Marble is a famous photograph of Earth taken on 7 December 1972 by the crew of the Apollo 17 spacecraft at a distance of about 45,000 km. ... A kilometer (Commonwealth spelling: kilometre), symbol: km is a unit of length in the metric system equal to 1,000 metres (from the Greek words χίλια (khilia) = thousand and μέτρο (metro) = count/measure). ...


A satellite can only see a relatively small area at a time. For this reason mapping a large area (or the whole Earth) takes a lot of time and most satellite images are on average several years old. Because imaging satellites are in low Earth orbits, real-time imaging of a certain area is complicated. However, spy satellites can do this during wars and other military operations or to provide data for intelligence agencies. Still, the troops frequently find out that the ground truth is different from the images that were taken some time ago. A low Earth orbit (LEO) is an orbit in which objects such as satellites are below intermediate circular orbit (ICO) and far below geostationary orbit, but typically around 350 - 1400 km above the Earths surface. ... KH-4B Corona satellite Lacrosse radar spy satellite under construction A spy satellite (officially referred to as a reconnaissance satellite or recon sat) is an Earth observation satellite or communications satellite deployed for military or intelligence applications. ... In cartography and analysis of aerial photographs and satellite imagery, the ground truth is the facts that are found when a location is field checked -- that is, when people actually visit the location on foot. ...


The image resolution of satellite images varies. For most cities in the world photos with resolution of 10 meters or better are available. For areas outside cities the resolution can be 100-500 meters. Most of the Earth is imaged with resolution of 1 km or better. For many smaller areas images with resolution as high as 10 cm can be available. Satellite imagery is supplemented with aerial photography, which has higher resolution, but is more expensive per square meter. The word resolution has several meanings, depending on context. ...


Because the total area of the land on Earth is so large and because resolution is relatively high, satellite databases are huge. Storing and serving satellite imagery is a big technical challenge.


Satellite imagery can be combined with GIS data. For example, the EarthViewer can combine the images with maps and other information from various sources. A geographic information system or geographical information system (GIS) is a system for creating and managing spatial data and associated attributes. ...


In the early 21st century satellite imagery became widely available when affordable, easy to use software with access to satellite imagery databases became offered by several companies and organizations. The 21st century is the century that began on 1 January 2001 and will last to 31 December 2100. ...


In 2005 the Australian company Astrovision (ASX: HZG) announced plans to launch the first ever commercial Geostationary satellite in the Asia-Pacific. It will provide true color, real-time live satellite feeds, with down to 250 metres resolution over the entire Asia-Pacific region, from India to Hawaii and Japan to Australia. They intend to provide this content to users of 3G mobile phones, over Pay TV as a weather channel, and to corporate and government users. 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ...


One drawback of using satellite imagery is that images dissipate without the sun's presence (for instance, in weather). When viewing a satellite image, meteorologists often turn to other images such water vapour imagery or radars to check for precipitation and cloud formation.


See also

Object-oriented image classification recognizes that important semantic information is not represented in single pixels but in meaningful objects in an image and their mutual relations, i. ... The Shuttle Radar Topography Mission (SRTM) is a research effort that obtained elevation data on a near-global scale to generate the most complete high-resolution digital topographic database of Earth to date. ... Ash plumes on Kamchatka Peninsula, eastern Russia MODIS (Moderate-resolution Imaging Spectroradiometer) is a payload scientific instrument launched into Earth orbit by NASA in 1999 on board the Terra (EOS AM) Satellite, and in 2002 on board the Aqua (EOS PM) satellite. ... Google Earth, a highly detailed virtual globe that comes with atmosphere effects, seabed and even a simplified planetarium A virtual globe is a 3D software model or representation of the Earth. ... World Wind is a virtual globe developed by NASA for use on personal computers running Microsoft Windows. ... MSN Virtual Earth is a free online virtual globe map service by Microsoft. ... Google Earth is a free, downloadable virtual globe program. ... TerraServer-USA web site TerraServer-USA is a free online repository[1] of public domain aerial imagery and satellite imagery, formerly known as Microsoft TerraServer. ... Terraserver. ... Screenshot of Google Maps showing a route from Toronto to Ottawa Penang island and Province Wellesley on the mainland as seen on Google Maps [1] Google Maps is the conventional name of a free, web map server application and technology provided by Google at http://maps. ... Image of Sanswire One, a prototype Stratellite. ... Pictometry International is a Rochester, New York-based company that provides detailed aerial photography. ...

External links


  Results from FactBites:
 
Nikumaroro Satellite Photo (998 words)
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Using copies of the Keyhole satellite photos of their home towns or other favorite places, the users take advantage of image annotation features to provide personal histories and information regarding particular points of the area.
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