The exosphere… sounds like a really far 
out place, huh? Well, it is.
In fact, the exosphere is the outermost layer of our atmosphere.
The exosphere is the layer above the ionosphere and starts at the exobase — somewhere around 300 to 400 miles above ground.
The exosphere is the layer where the atmosphere merges into outer space. Air pressure is very, very low, even at the base of the exosphere.
In fact, it’s in the exosphere were matter can actually escape Earth’s gravitational pull and enter outer space!
Joshua McMorrow-Hernandez
My love for coins and numismatics began when I was 11 years old. I primarily collect and study U.S. coins produced during the 20th century. I've also been studying meteorology and watching weather patterns for years. I enjoy sharing little-known facts and fun stuff about coins, weather, travel, health, and living green with others.
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