Vallis Marineris Wallpaper
Valles Marineris Wallpaper


109 - Remembering Mariner 9 (feat. William K. Hartmann)

Play Episode (55:26)

Fifty years ago this month, the Mariner 9 mission became the first spacecraft to orbit another planet beyond Earth. It created the first global map of Mars and set the course for Martian exploration for the next five decades. Dr. William K Hartmann was a co-investigator on the mission and wrote the book The New Mars: Discoveries of Mariner 9, and he joins Jake to talk about the impact this mission has, even today.

We talk Mariner 9

Follow Bill

Follow Jake & WeMartians

Learn about time on Mars! See live mission clocks, learn about sols and Mars years and solar longitude, and discover your Martian birthday! Visit, a new site from Jake.

Tharsis Planetary Park

Celebrate Mariner 9's 50th anniversary with the Tharsis Planetary Park design at the WeMartians shop today! You can get it in a t-shirt or on a coffee mug.

Support Jake

While WeMartians is no longer publishing, you can continue to support Jake with his work on Off-Nominal. Perks include:

  • Access to the exclusive Off-Nominal Discord Community
  • Discounted Merchandise

Get Updates

Get just enough updates on shows, products, and news without cluttering your inbox.

FIRST FLIGHT - Ingenuity Helicopter First Flight Commemorative Mug

First Flight

Pick up this commemorative coffee mug celebrating Ingenuity's historic first take off and landing on Mars.

Shop Merch
Show Player