America’s only landing on Venus was an accident — in 1978 NASA dropped four cone-shaped probes into the Venusian atmosphere, none built to survive hitting the ground, and one of them struck the surface, kept transmitting for 67 minutes and 37 seconds, and very likely still sits there today, the only American craft ever to land on Venus.
For 85 years after its discovery, Pluto was little more than a dot in a telescope — until 2015, when a piano-sized NASA spacecraft that had traveled more than three billion miles flew past and revealed a world with a 1,000-kilometer heart-shaped glacier of frozen nitrogen and a surface so young it should not exist.
