## So What?

Since Photonis is 3 times smaller than Earth, its gravity is 3 times weaker. However much you weigh on Earth, you would weigh only a third as much on Photonis! For example, a person who weighs 225 pounds on Earth would weigh 225 ÷ 3 = 75 pounds on Photonis. You can also jump higher on Photonis than you can on Earth!

#### According to the column chart, Goldilocks is the strongest jumper, Burger is the weakest jumper, and Devon is the median jumper.

The radius of Earth is 3,826.8 miles, so that makes the volume about 234,744,759,189 cubic miles, and the surface area 184,026,935.7 square miles. The diameter is always twice is radius, so Earth's diameter is 7,653.6 miles. Since Photonis is 1/3 Earth's size, that makes its size these numbers on the following table:

 Radius 1,275.6 miles Diameter 2,551.2 miles Surface Area 20,447,437.3 square miles Volume 8,694,250,340 cubic miles

If you do the math, then you'll see that the surface area of Photonis is 9 times smaller and the volume is 27 times smaller than Earth's! (Tripling the size of a sphere multiplies its surface area by 9, and its volume by 27.) There's more info about multiplying the size of an object(or character) in the Puzzles & Games Section; see the puzzle entitled "Mass Multiplication or Wacky Weight-Changing Women" for more details.

Finally, unlike Earth, Photonis' axis is tilted 10 degrees plus 15 arcminutes, so Winter is shorter and Summer is longer in its northern hemisphere; it's vice versa for the southern hemisphere. Earth's axis is tilted 23 degrees plus 30 arcminutes. Converting the units to just degrees, Photonis' axis tilt is 10.25°; Earth's is 23.5°. One thing Photonis has in common with Earth is its distance from its corresponding star Fuego(Spanish word for fire); it's also 1 AU from Fuego, which is 93 million miles in distance. It also rotates from west to east just like Earth. As you may have guessed, its yearly orbit around Fuego is exactly as long as Earth's yearly orbit around the Sun, which is 365.25 days on average. Plus, Photonis' daily spin is as long as Earth's: 24 hours. By the way, the name of Photonis' galaxy is Rainbow Ring Galaxy!

##### Source of reference for Earth's diameter & radius: Measurements & Conversions published in 1994 by Running Press Book Publishers.

See a data table of Photonis compared to the terrestrial planets of our solar system!

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