We Got Our First Close-up Look at Venus 40 Years Ago Today

Venus' perpetually overcast skies had long obscured our view of the planet, making it appear nearly featureless when viewed in the visible light spectrum. But when viewed through Mariner 10's ultraviolet-filtered camera lens, the second planet from the Sun can be seen in unprecedented detail. See what Venus looks like… » 2/05/14 12:15pm 2/05/14 12:15pm