Vive La France
This 17th-century palace became the political center of absolute monarchy in France.
What is the Palace of Versailles?
This spectral range of sunlight is mostly blocked by Earth's atmosphere but can cause cancer.
What is ultraviolet radiation(UV-C)?
This 3-letter acronym describes the document that provides a flight plan's route and altitude.
What is Instrument Flight Rules (IFR)?
This satellite, launched in 1957, marked the beginning of the space race.
What is Sputnik-1?
Built around 210 BCE, this massive defensive structure was unified during the Qin dynasty.
What is the Great Wall of China?
This Enlightenment philosopher’s ideas heavily influenced the French Revolution.
Who is Jean-Jacques Rousseau?
The solar constant measures this in watts per square meter at the top of Earth’s atmosphere.
What is solar irradiance?
This surveillance method uses aircraft position reporting via satellite communication.
What is ADS-B (Automatic Dependent Surveillance–Broadcast)?
The Kármán line, often considered the edge of space, lies at this altitude in kilometers.
What is 100?
Located in Jordan, this ancient city is carved directly into rose-red cliffs.
What is Petra?
The storming of this medieval fortress marked the symbolic start of the Revolution.
What is the Bastille?
This effect describes atmospheric trapping of infrared radiation from the sun.
What is the greenhouse effect?
ATC uses this phonetic alphabet word to refer to a holding pattern or orbit.
What is a racetrack pattern?
This mission ended the Space Shuttle program in 2011.
What is STS-135?
This pre-Columbian temple complex in Mexico is aligned with astronomical phenomena.
What is Teotihuacan?
The Napoleonic Code influenced modern legal systems and was implemented in this year.
What is 1804?
Sunspots occur in this part of the Sun, visible from Earth.
What is the photosphere?
This term refers to the vertical distance between two aircraft to prevent collisions.
What is vertical separation?
This object’s gravity causes time dilation measurable by GPS systems.
What is Earth?
This fortress-prison held the Crown Jewels and many executed nobles.
What is Teotihuacan?
This French Resistance leader became President in 1959.
Who is Charles de Gaulle?
This term refers to a burst of solar plasma and magnetic field into space.
What is a coronal mass ejection (CME)?
This U.S.-based system provides real-time weather and traffic info to cockpits.
What is TIS-B (Traffic Information Service–Broadcast)?
This term describes the point at which a spacecraft can escape Earth’s gravity.
What is escape velocity?
This Italian cathedral is known for its iconic, yet unintended, architectural flaw.
$500: What is the Leaning Tower of Pisa?