If you were to stack all CDs, you would make a tower about 8.1072m tall but would be about 32033576577 CDs short of touching the moon... If you laid all CDs side by side in one line, you would make a chain about 810.72m long but still be about 333672035 CDs short of circling the Earth... The total mass of all CDs would be about 101.34kg yet you would require a further 459910 CDs to outweigh an average African elephant...