If you were to stack all CDs, you would make a tower about 8.1756m tall but would be about 32033576520 CDs short of touching the moon... If you laid all CDs side by side in one line, you would make a chain about 817.56m long but still be about 333671978 CDs short of circling the Earth... The total mass of all CDs would be about 102.195kg yet you would require a further 459853 CDs to outweigh an average African elephant...