Here is as worksheet I constructed to ilustrate the scale of interstellar distances. I've sent this to school with my kids and I have shared it with a number of non-astronomy types. It's a good conversation starter. I've used rounded numbers to ease the math. Let me know if you spot any blatant errors. If anyone would like an Excel spreadsheet of this with all the formulas let me know. It's pretty simple.
Daryl
Daryl
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