wb_aeropace_ai-az

3. A line of latitude (~66.5° N) marking the southern boundary of the Arctic region.
4. The layer of gases surrounding a planet; Earth’s atmosphere supports life and protects from harmful solar radiation.
6. Automatic Picture Transmission — A method for transmitting satellite images to ground stations in real-time.
8. An underground layer of water-bearing rock or material from which groundwater can be extracted.
9. Atmospheric Laboratory for Applications and Science — A series of shuttle missions focused on atmospheric science and solar studies.
10. The time when a spacecraft comes into view of a ground station and communication begins.
12. A measure of how the atmosphere responds to external factors like solar radiation or greenhouse gases.
15. A ring-shaped coral reef or island surrounding a lagoon, often formed from sunken volcanoes.
16. Advanced Very High Resolution Radiometer — A space-borne sensor used for Earth observation, especially weather and environmental monitoring.
17. The force per unit area exerted by the weight of the atmosphere above a surface.
18. The point where an orbit crosses the equatorial plane from south to north.
19. The ratio of an aircraft wing's span to its average chord; indicates aerodynamic efficiency.

1. Sound frequencies in the range of human hearing, typically 20 Hz to 20 kHz.
2. Atmospheric Infrared Sounder — A satellite instrument measuring atmospheric temperature and humidity.
3. Specific wavelength ranges in which Earth's atmosphere is transparent to electromagnetic radiation.
5. The reduction in signal strength during transmission through a medium, such as the atmosphere.
7. The angle between the ascending node and the orbit's point of closest approach to Earth (perigee), measured in the direction of motion.
8. Astronomical Unit — The average distance between the Earth and the Sun, approximately 149.6 million kilometers.
10. Natural light displays in Earth's polar regions caused by charged particles from the solar wind interacting with the atmosphere.
11. Atmospheric Radiation Measurements Program — A research program that studies Earth’s climate and radiation balance.
12. The simulation of human intelligence in machines programmed to think and learn.
13. The point in an orbit farthest from the Earth.
14. Advanced Research and Global Observation Satellite — A satellite system used for data collection and environmental monitoring.
15. The angular measurement in the horizontal plane, usually measured from true north in degrees.