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Aqua

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description Aqua Overview

Aqua is a NASA Earth Observing System satellite launched on May 4, 2002, into a sun-synchronous polar orbit. It carries six instruments including AIRS, AMSR-E, MODIS, and CERES to monitor Earth's water cycle, measuring atmospheric water vapor, clouds, precipitation, ocean color, and sea ice. As part of NASA's A-train satellite constellation, Aqua continues to provide continuous data for climate research and weather forecasting more than two decades after its launch.

help Aqua FAQ

What does NASA's Aqua satellite actually measure?

Aqua observes the global water cycle, including atmospheric water vapor, clouds, precipitation, snow, sea ice, and ocean temperature. Its MODIS and AIRS instruments also provide data on vegetation, aerosols, and atmospheric temperature.

Why is the satellite called Aqua?

The Latin name for water reflects the mission's focus on water moving through the oceans, atmosphere, ice, and land. NASA launched Aqua in 2002 as part of the Earth Observing System.

What is the difference between Aqua and Terra?

Both carry MODIS instruments, but Terra crosses the equator in the morning while Aqua makes an afternoon crossing. The two observation times let scientists compare changing clouds, temperatures, fires, and surface conditions during the day.

Can the public view Aqua satellite images?

Yes. NASA services such as Worldview display imagery from Aqua's MODIS instrument, often within hours of observation. Users can inspect events such as wildfires, dust storms, hurricanes, and sea-ice changes.

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