Summary
A photo from NASA's Artemis II mission shows the Earth from space, sparking surprise on social media about how much of the planet is covered in water. NASA explains that about 75% of Earth's surface is water, but most of it is not usable by people.
Key Facts
- The image from Artemis II shows Earth with vast stretches of water and little land.
- Social media users reacted with surprise to the large amount of water covering Earth's surface.
- NASA states that 75% of Earth's surface is covered by water.
- Only about 1% of Earth's water is available for human use, such as drinking and farming.
- Oceans hold roughly 96.5% of Earth's water, with the rest in ice caps, glaciers, and underground.
- Scientists believe Earth's water mainly came from asteroids and comets.
- Asteroids and comets, rich in water, likely struck Earth during its formation, contributing to its water content.
