The Wikipedia page for Associated Press offers an overview and detailed information about the Associated Press (AP), which is one of the largest and most renowned news agencies in the world.

An astronomer is a scientist who studies celestial objects and processes, such as stars, planets, galaxies, and the universe as a whole.

The Wikipedia page on climate provides a detailed overview of climate, including its definition, composition, and factors that influence it.

A drainage basin, also known as a catchment area or watershed, is an area of land where all water flows to a common outlet, such as a river, stream, or lake.

An Earth observation satellite or Earth remote sensing satellite is a satellite used or designed for Earth observation (EO) from orbit, including spy satellites and similar ones intended for non-military uses such as environmental monitoring, meteorology, cartography and others.

The electromagnetic spectrum is the range of frequencies of electromagnetic radiation and their corresponding wavelengths and energies.

Envisat ("Environmental Satellite") is a large Earth-observing satellite which has been inactive since 2012.