Science / oxygen
Facts about Oxygen
- 03
At 90 kilometers altitude, the thermosphere contains only 0.000001% oxygen by volume despite being part of Earth's upper atmosphere layers.
- 02
Oxygen was named by Antoine Lavoisier in 1777 from Greek words meaning "acid-former" because he mistakenly believed it was necessary for all acids.
- 01
Oxygen comprises approximately 21% of Earth's atmosphere and was first isolated by Carl Wilhelm Scheele in 1772.