Exosphere Collection

The Aurora Borealis
3740649 The Aurora Borealis; (add.info.: Illustration depicting the Aurora Borealis observed from the HMS Daedalus. Dated 19th Century.); Universal History Archive/UIG

The Aurora Borealis, 19th century (engraving)
3740648 The Aurora Borealis, 19th century (engraving); (add.info.: Illustration depicting the Aurora Borealis observed from Berville-sur-Mer. Dated 19th Century.); Universal History Archive/UIG

The Aurora Borealis
3740659 The Aurora Borealis; (add.info.: Illustration depicting the Aurora Borealis observed from Paris. Dated 19th Century.); Universal History Archive/UIG

The Aurora Borealis
3740657 The Aurora Borealis; (add.info.: Illustration depicting the Aurora Borealis observed from Orleans. Dated 19th Century.); Universal History Archive/UIG

The Aurora Borealis
3740658 The Aurora Borealis; (add.info.: Illustration depicting the Aurora Borealis observed from Orleans. Dated 19th Century.); Universal History Archive/UIG

The Aurora Borealis
3740654 The Aurora Borealis; (add.info.: Illustration depicting the Aurora Borealis observed during the Franklin's lost expedition. Dated 19th Century.); Universal History Archive/UIG

The Aurora Borealis
3740656 The Aurora Borealis; (add.info.: Illustration depicting the Aurora Borealis observed from Boulogne-sur-Mer. Dated 19th Century.); Universal History Archive/UIG

The Aurora Borealis
3740655 The Aurora Borealis; (add.info.: Illustration depicting the Aurora Borealis observed from Dublin. Dated 19th Century.); Universal History Archive/UIG

air, colour, earth, exosphere, layer, mesosphere, nobody, plain background, star, thermosphere, troposphere, Dorling Kindersley Prints, 909919336

Diagram of Energetic Neutral Atoms from a region outside Earths magnetopause
NASAs Interstellar Boundary Explorer (IBEX) found that Energetic Neutral Atoms, or ENAs, are coming from a region just outside Earths magnetopause where nearly stationary protons from the solar wind

A diagram illustrating the parts of Earths atmosphere

Earths atmosphere, artwork
Earths atmosphere. Computer artwork showing the different levels of the Earths atmosphere. From top to bottom these are: exosphere (600km), thermosphere (80km), mesosphere (50km), ozone layer

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Beyond the mesosphere, where colors fade into the vastness of space, lies Earth's exosphere - the outermost layer of our atmosphere. A plain background of stars contrasts the dynamic dance of energetic neutral atoms, visible in this diagram from outside Earth's magnetopause. Few live to see this ethereal sight, but the exosphere's role in protecting our planet from cosmic radiation is a reminder of the wonders hidden in the air we breathe.