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Planet Earth is 25,000 miles around and has undergone nearly five billion years of transformation from a molten mass to a habitable environment.
More than 100 astronauts have lived and worked on the International Space Station since 2000, conducting research under unique conditions.
Colonel Joseph Kittinger ascended nearly 20 miles into the atmosphere in 1960 to test human endurance at high altitudes during a key military mission.
4.5 billion years ago, Earth formed as a molten sphere surrounded by toxic gases, leading to the development of its life-sustaining atmosphere.
The ocean absorbs nearly a quarter of the carbon dioxide emitted each year, playing a vital role in regulating the planet's climate.
Space debris travels at speeds of 17,500 miles per hour, posing serious risks to astronauts and spacecraft in Earth's orbit.
