Earth Day's 42nd anniversary COLOR IMAGE

Earth Day's 42nd anniversary FREE COLOR IMAGE: NASA is taking part in the celebration of Earth Day's 42nd anniversary on the National Mall in Washington from April 20 through April 22. The agency's involvement includes three consecutive days of activities and exhibits open to the public. Additional activities are scheduled at nearby NASA Goddard Space Flight Center in Greenbelt, Md.

NASA's Earth Science Mission seeks to understand Earth's systems and their responses to natural and anthropogenic (human-made) changes. A fleet of satellites in NASA's Earth Observing System gives scientists the global, long-term measurements they need to connect the atmosphere (air), lithosphere (land), hydrosphere (water), cryosphere (snow/ice), and biosphere (life) as a single system. NASA works with many other partners from government, industry, academia, and international space agencies on the satellite missions that make up the EOS series. (Credit: NASA)

Image Credit: NASA / JPL NASA still images; audio files; video; and computer files used in the rendition of 3-dimensional models, such as texture maps and polygon data in any format, generally are not copyrighted. Unless otherwise noted, images and video on NASA public web sites (public sites ending with a nasa.gov address) may be used for any purpose without prior permission. The endorsement of any product or service by NASA must not be claimed or implied.

This file is a work of a NASA employee, taken or made during the course of the person's official duties. As a work of the U.S. federal government, the file is in the public domain.

Generally speaking, works created by U.S. Government employees are not eligible for copyright protection in the United States. See Circular 1 "COPYRIGHT BASICS" PDF from the U.S. Copyright Office.

NASA requests to be acknowledged as the source of the material except in cases of advertising.

TEXT CREDIT: NASA - Earth: