• The oldest piece of space junk still in orbit is the second US satellite ever launched, Vanguard I, measuring 16.5 cm (6.5 in) in diameter and weighing 1.47 kg.
    The oldest piece of space junk still in orbit is the second US satellite ever launched, Vanguard I, measuring 16.5 cm (6.5 in) in diameter and weighing 1.47 kg.
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