1. Hydrogen is the most abundant element in the universe.
2. The earth’s rotation on its axis is from West to East.
3. The job of the sophisticated unmanned US spacecraft Voyager was to examine the Uranus.
4. In 1977, USA launched two Voyagers and in 1979 they passed Jupiter and sent back color pictures and other information about the planet and its moons.
5. Venus is the Roman goddess that was called Aphrodite in Greek.

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