If you were to stack all CDs, you would make a tower about 8.3928m tall but would be about 32033576339 CDs short of touching the moon... If you laid all CDs side by side in one line, you would make a chain about 839.28m long but still be about 333671797 CDs short of circling the Earth... The total mass of all CDs would be about 104.91kg yet you would require a further 459672 CDs to outweigh an average African elephant...