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- J -
| WORD | MEANING | EXTRA INFORMATION | |
| Janus | moon of jupiter | ||
| Jarnsaxa | moon of saturn | ||
| Juliet | |||
| Jupiter | Fifth planet from the Sun and the largest planet in the Solar System. A Gas Giant made up mostly of hydrogen and helium, Jupiter is large enough to contain all of the other planets in the Solar System. The Red Spot on Jupiter is an Earth-sized storm that has been raging for hundreds of years. There are at least 63 moons orbiting Jupiter. | a | |
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