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spaceSpace and Physics

North America To Scale On Various Planets In Our Solar System

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Stephen Luntz

Stephen has a science degree with a major in physics, an arts degree with majors in English Literature and History and Philosophy of Science and a Graduate Diploma in Science Communication.

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181 North America To Scale On Various Planets In Our Solar System
John Brady/Astronomy Central. The Great Red Spot makes North America look tiny, and even some of Jupiter's lesser storms are larger than the continent.

We've all seen images comparing the size of Earth with that of other planets in the solar system. The problem, John Brady of Astronomy Central realized, is that these images assume a grasp of Earth's scale. So Brady decided to do something different and compare astronomical objects with pieces of the planet his readers may be familiar with

Suddenly, with the huge continent of North America dwarfed by Jupiter's storms, the universe seems an even larger place. In the other direction, Mars looks so much more human-scaled.

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John Brady/Astronomy Central. How the U.S. and Canada would measure up to Mars.

Brady has also reversed the process, showing what the solar system's largest mountain, Olympus Mons, would look like if it replaced the Grand Canyon as Arizona's prime tourist attraction. At 26 kilometers (85,000 ft) high, it would truly be a wonder, since the Earth's greater gravity restricts mountains to a third of that size or less.

John Brady/Astronomy Central. If located appropriately, Olympus Mons would cover the whole state of Arizona.

Not everything makes us feel small. If you live in Liverpool, UK, you might be tempted to go for a bike ride around the area that Brady shows would be encompassed by a neutron star, or make an equivalent image for your own home with the help of satellite photos.

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John Brady/Astronomy CentralNeturon stars really are the size of a city.
Brady told the Huffington Post, “I got the 'North America on Jupiter' image to scale by looking at size comparisons on NASA images of Earth compared to Jupiter's Great Red Spot. The Mars image with North America placed over it was done by knowing the diameter of the red planet, then finding the distance between two U.S. cities. I used New York and San Francisco." 


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