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The cosmic microwave background (CMB, CMBR), or relic radiation, is microwave radiation that fills all space in the observable universe. With a standard optical telescope, the background space between stars and galaxies is almost completely dark. However, a sufficiently sensitive radio telescope detects a faint background glow that is almost ...
These are azimuthal orthographic projections of the Earth from four sides plus the poles. 726x726 pixels, aliased. XCFs have separate layers for water, land, coastlines, political borders, political borders over water (not shown in PNGs), and latitude & longitude gridlines (not shown in PNGs). Image:Blankmap-ao-000 -africa europe.png XCF.
Physical geography. New Guinea's topography. Papua New Guinea has a total area of 462,840 km 2 (178,700 sq mi), of which 452,860 km 2 (174,850 sq mi) is land and 9,980 km 2 (3,850 sq mi) is water. This makes it the 3rd largest island country in the world. [1] Its coastline is 5,152 km (3,201 mi) long. [citation needed]
World map. A world map is a map of most or all of the surface of Earth. World maps, because of their scale, must deal with the problem of projection. Maps rendered in two dimensions by necessity distort the display of the three-dimensional surface of the Earth. While this is true of any map, these distortions reach extremes in a world map.
Google Earth is a web and computer program that renders a 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles.
A PNG file contains a single image in an extensible structure of chunks, encoding the basic pixels and other information such as textual comments and integrity checks documented in RFC 2083. [ 7 ] PNG files have the ".png" file extension and the "image/png" MIME media type. [ 8 ] PNG was published as an informational RFC 2083 in March 1997 and ...
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 and businesses around the world. Satellite imaging companies sell images by licensing them to governments and businesses such as Apple Maps ...
The Cosmic Background Explorer (COBE / ˈ k oʊ b i / KOH-bee), also referred to as Explorer 66, was a NASA satellite dedicated to cosmology, which operated from 1989 to 1993.Its goals were to investigate the cosmic microwave background radiation (CMB or CMBR) of the universe and provide measurements that would help shape our understanding of the cosmos.