# Get in Line – with Saturn and Mars

Our planet Earth isn’t the only ball of rock whizzing through space. There are 7 other major planets going around the Sun — Mercury, Venus, Mars, and so on. Then there’s our Moon. It’s a quarter million miles away, which sounds far. But someone figured out that if you lined up all the other planets, they’d fit perfectly between us and the Moon! They’d leave only 5,000 miles extra, so even Pluto could fit if it still counted as a major planet.

Wee ones: What shape are Earth, the Moon, and our planet friends?

Little kids: How many objects can you count in the photo of Earth, Moon, and the planets?  Bonus: Mercury is about 3,000 miles wide, Venus is about 7,000, and Mars is about 4,000. How much of that line-up do those 3 cover together? (Hint: You can add 3 thousand, 7 thousand, and so on as if you were adding 3 apples, 7 apples…)

Big kids: Jupiter is almost 300,000 miles around at its widest point. How many 3,000-mile-wide Americas could you wrap around Jupiter?  Bonus: If Earth is 8,000 miles wide and Jupiter is 88,000 miles wide, how many times as wide is Jupiter?

The sky’s the limit — for real: If you wanted to line up the 4 gas giants (Jupiter, Saturn, Uranus and Neptune) in the last 4 slots but in some other order, how many other ways could you line them up?