File:Moon PIA00302.jpg

摘要

Original Caption Released with Image

About 50,000 Clementine images were processed to produce the four orthographic views of the Moon. Images PIA00302, PIA00303, PIA00304, and PIA00305 show albedo variations (normalized brightness or reflectivity) of the surface at a wavelength of 750 nm (just longward of visible red). The image projection is centered at 0 degree latitude and 0 degree longitude. The lunar nearside is a contrast between dark and light albedo surfaces that has been fancied as the "Man in the Moon". Lunar terrain types are still designated by their 17th century name maria (dark albedo features also known as basins) and terra (brighter albedo features also known as uplands or highlands). The maria constitutes about 16 percent and the terra 84 percent of the lunar surface. The nearside is composed of about 30 percent maria. Extensive bright ray systems surround craters Copernicus (upper left center) and Tycho (near bottom). Studies have shown that two major processes, impact and basaltic volcanism, have shaped the major physical features of the lunar surface.

• 
  Near side
• 
  90 degrees East
• 
  Far side
• 
  90 degrees West

See also

• PIA00002 — North Pole Region
• PIA00001 — South Pole Region

Source

• http://photojournal.jpl.nasa.gov/catalog/PIA00302
• http://photojournal.jpl.nasa.gov/jpeg/PIA00302.jpg

From Wikipedia.

協議

	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."