If you were to stack all CDs, you would make a tower about 8.1384m tall but would be about 32033576551 CDs short of touching the moon... If you laid all CDs side by side in one line, you would make a chain about 813.84m long but still be about 333672009 CDs short of circling the Earth... The total mass of all CDs would be about 101.73kg yet you would require a further 459884 CDs to outweigh an average African elephant...