Earth from NASA

Watching Planet Earth Roll Thru Space

Earth viewing from the International Space Station

NASA's "Mission Statement" speaks of the goal of studying Planet Earth for the benefit of all humanity. Today's mission statement highlights “advances in science, technology, aeronautics, and space exploration to enhance knowledge, education, innovation, economic vitality and stewardship of Earth.” An era of earth science missions beginning in the 1960's have created a new vision and 'planetary awareness'. Planet Citizens, Planet Scientists continue to this day developing new Earth System Science from space and gathering critical data for environmental protection.

The National Aeronautics and Space Act was signed into law on July 29, 1958.

In the National Aeronautics and Space Act, which established the agency in 1958, the first objective of the agency was listed as "the expansion of human knowledge of the earth and of phenomena in the atmosphere and space." -- https://www.nasa.gov/offices/ogc/about/space_act1.html

The Space Act has been amended many times since 1958 but these goals have been little changed. In NASA’s Authorization Act for 1985 the expansion of human knowledge “of the Earth” was added to goal 1 -- https://history.nasa.gov/spaceact-legishistory.pdf

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"We refer to the mission statement in all our research proposals that go out for peer review, whenever we have strategy meetings," said Philip B. Russell, a 25-year NASA veteran who is an atmospheric chemist at the Ames Research Center in Moffett Field, Calif. "As civil servants, we're paid to carry out NASA's mission. When there was that very easy-to-understand statement that our job is to protect the planet, that made it much easier to justify this kind of work."

Since 1972, when NASA launched the first Landsat satellite to track changes on the earth's surface, the agency has been increasingly involved in monitoring the environment..

• https://www.nytimes.com/2006/07/22/science/nasas-goals-delete-mention-of-home-planet.html

The "understand and protect" phrase was cited repeatedly by James E. Hansen, a climate scientist at NASA...

• https://www.greenpolicy360.net/w/File:Hansen-testimony-1988.jpg

50 plus years of Landsat

• https://www.greenpolicy360.net/w/Landsat_data_users_handbook

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NASA: Viewing the Home Planet from the International Space Station

• https://www.nasa.gov/image-feature/viewing-earth-from-the-space-station
• https://www.youtube.com/nasa/live

International Space Station orbits are approximately 90 minutes. With a 90 minute orbit and 24 hour day, the ISS circles the Earth 16 times a day -- 16 sunrises and 16 sunsets each 'orbital day'.

The ISS passes from periods of night to day every 45 minutes. Depending on the channel you are watching, if live video is unavailable during periods of darkness, other pre-recorded footage may be shown until live transmission resumes when the space station returns to daylight.

Each video channel continuously goes through on/off periods of testing, upgrading and maintenance.

NASA ISS live streaming is courtesy of www.nasa.gov and its partners.

• https://spaceofficial.com

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Earth Science from Space

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