Fire on Earth Source: https://apod.nasa.gov/apod/ap001121.html #fire #wldfire#earth #forstfire nature #envionment #photgraphy #ecsystem #ontana #bitterroovally #elk #wldlife #srvival oxyge #life#space #asronomy #planet

Sometimes, regions of planet Earth can be seen lit up with fire. Since fire is the rapid acquisition of oxygen, and since oxygen is a key indicator of life, fire on any planet would be an indicator of life on that planet. Most of the Earth's land has been scorched by fire at some time in the past.