astrophysicist
Noun

person who studies the relationship between matter, energy, motion, and force outside the Earth's atmosphere.

drone
Noun

unmanned aircraft that can be guided remotely.

European Union
Noun

association of European nations promoting free trade, ease of transportation, and cultural and political links.

firefighter
Noun

person who works to control and put out fires.

geosynchronous orbit
Noun

orbit that moves at the same speed as the Earth's rotation.

infrared imaging
Noun

process of creating, processing, storing, and displaying images made from infrared radiation, which has wavelengths longer than visible light but shorter than microwaves.

retardant
Noun

substance capable of reducing the speed of a reaction.

survey
Noun

a study or analysis of characteristics of an area or a population.

Noun

uncontrolled fire that happens in a rural or sparsely populated area.