Language:
English
Subject area: physical science, environment
Qualification: Master
Kind of studies: full-time studies
Earth
Earth is the third planet from the Sun and the only object in the Universe known to harbor life. According to radiometric dating and other sources of evidence, Earth formed over 4.5 billion years ago. Earth's gravity interacts with other objects in space, especially the Sun and the Moon, Earth's only natural satellite. Earth revolves around the Sun in 365.26 days, a period known as an Earth year. During this time, Earth rotates about its axis about 366.26 times.
Earth Observation
Earth observation (EO) is the gathering of information about the planet's physical, chemical, and biological systems via remote-sensing technologies, supplemented by earth-surveying techniques, which encompasses the collection, analysis, and presentation of data. Earth observation is used to monitor and assess the status of and changes in natural and built environments.
Observation
Observation is the active acquisition of information from a primary source. In living beings, observation employs the senses. In science, observation can also involve the recording of data via the use of scientific instruments. The term may also refer to any data collected during the scientific activity. Observations can be qualitative, that is, only the absence or presence of a property is noted, or quantitative if a numerical value is attached to the observed phenomenon by counting or measuring.
Earth
He is a lover of righteousness and justice. With the loving-kindness of Jehovah the earth is filled.
Book of Psalms 33:5.
Observation
One man's observation is another man's closed book or flight of fancy.
Willard Van Orman Quine, in Andrew Bailey First Philosophy: Knowledge and Reality: Fundamental Problems and Readings in Philosophy, Broadview Press, 6 August 2004, p. 300
Earth
And again, observe ye the days of summer how the sun is above the earth over against it. And you seek shade and shelter by reason of the heat of the sun, and the earth also burns with growing heat, and so you cannot tread on the earth, or on a rock by reason of its heat.
Book of Enoch, Chapter 4, translated by Robert Charles, 1917.
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