If you were to stack all CDs, you would make a tower about 6.3612m tall but would be about 32033578032 CDs short of touching the moon... If you laid all CDs side by side in one line, you would make a chain about 636.12m long but still be about 333673490 CDs short of circling the Earth... The total mass of all CDs would be about 79.515kg yet you would require a further 461365 CDs to outweigh an average African elephant...