Moon landing anniversary - Next great leap for mankind

Neil Armstrong told the world: āThatās one small step for (a) man, one giant leap for mankindā as he stepped onto the surface of the moon in the Sea of Tranquillity.
Whether Armstrong actually included the indefinite article is lost in conjecture and bursts of broadcast static. But as his mission had already delivered another hugely memorable description which resonates to this day ā āThe Eagle has landedā ā we should not perhaps be too vexed.