Today (November 14) is the forty-sixth anniversary of Mariner 9 achieving orbit around Mars, the first time a human-made object orbited another planet. Though a worldwide dust storm obscured the planet for a month, the probe eventually took 7,329 pictures and imaged over eighty percent of the surface.

More than sixty-seven years later, an expedition led by Conn Garrow became the first to land humans successfully on the surface of the Red Planet. To celebrate Mariner 9’s historic anniversary, you can read all about that expedition in Girl on Mars for only 99 cents in the Kindle Store, today only!