On Wednesday, one of the astronauts of the International Space Station took a picture showing a bright orange light orbiting the Earth's horizon. This orange light is known as the glare of the highest layers of the atmosphere caused by radiation.
This glow arises when molecules in the atmosphere are charged with sunlight and ultraviolet rays emitted by the sun. When the atoms reach the radiation, they start to move faster, and when they collide with each other, they release energy in the form of light. The result is glittering over the horizon of the earth.
The picture was taken on Australia and the front has a part of the cosmic station, but in the background there is an orange glitter, millions of stars and clouds of the earth.
This glow allowed researchers to take a look at how the atmosphere of the Earth works, that is, as particles entering space from Earth, interacting with the Earth's atmosphere.