196264y ago
Flyby
Mariner 2 Venus flyby
The first successful interplanetary mission. Mariner 2 revealed Venus to be blisteringly hot, with no detectable magnetic field — a blow to hopes of a habitable twin.
On This Day in Space
The first successful interplanetary mission. Mariner 2 revealed Venus to be blisteringly hot, with no detectable magnetic field — a blow to hopes of a habitable twin.