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Add two more stripes to this ingenious chart showing all the attempts over the past 50 years to send spacecraft to Mars. Let’s hope that the stripe for the Curiosity Mars Science Laboratory, which launched successfully on Saturday, reaches all the way to the surface of the planet.

Sadly, the stripe for Russia’s Phobos-Grunt Mars spacecraft, currently incommunicado in Earth orbit, appears doomed to end at the outside, “fail” ring, which may also spell the end of the country’s planetary program.

The apparent demise of Phobos-Grunt got me reading up on the history of Russian Mars exploration, looking for stories from happier days.  I hadn’t known about PrOP-M, the first rover (or maybe crawler is a better word) launched to Mars. It ended up failing , too, but it would have been fun to watch had it succeeded.

By 1971 the Soviets had already landed one Lunokhod rover on the moon’s surface. The 10-pound PROP-M, included as a payload on the Mars 3 lander launched in May 1971, was much more modest.  After Mars 3 touched down, the rover, attached to a 15-meter umbilical cord, was designed to shuffle away from the lander on two ski-like contraptions. The video below (queued up here at the 3:51 mark) shows how the rover maneuvered itself.  Unfortunately, Mars 3 went silent immediately after it touched down, and PROP-M was never heard from again. NASA didn’t land its own rover on Mars until 1997, when Sojourner rolled off of the Mars Pathfinder.

When Curiosity touches down on Mars next August, it should tip its electronic head in the direction of PROP-M, wherever it lies on the unforgiving plains of Mars.

Apollo 11

Where were you on July 20, 1969, when Apollo 11 astronauts Neil Armstrong and Buzz Aldrin first walked on the moon? What were you doing on October 4, 1957 when the Soviets launched Sputnik? Do you remember April 12, 1981, when the space shuttle Columbia made its first flight?

In 2008, the Smithsonian’s Folklife Festival included the program “NASA: Fifty Years and Beyond,” and as part of that program, visitors were encouraged to document (written on note cards and recorded on tape) their memories of America’s space program.  A few of the festival-goer’s memories appear below.

As the 50^th anniversary year of human spaceflight draws to a close, we ask you to remember your own space milestones. After you read the remembrances here, leave a comment to tell us where you were, what you saw, and how you felt.

I had just learned to drive my husband’s stick shift car. He worked in the simulation lab with astronauts. I was stopped in front of their building to pick up my husband. As he got into the car, he said, “There’s Neil.” I said, “Neil who?” He said, “Armstrong! Who else?” At that point I went limp, the clutch jumped, the car lurched forward, and Neil just missed being hit.

I grew up in Huntsville, Alabama. I remember Werner von Braun was our most famous citizen. Huntsville was very sleepy until Sputnik was launched. All of a sudden, Huntsville became a hotbed of activity, all centered on the space program. Within three years, the U.S. had an active space program. Many of the engines for spacecraft were built in Huntsville. Huntsville calls itself “The Space Capital of the Universe” now. In 1950, it was known as “the Watercress Capital of the U.S.” Things change!

In 1957 Sputnik went up and the talk was that U.S. students had to catch up academically. I was 10 years old—the next day was the first time we ever had homework in school.

I was in second grade when the entire student body of Norfeld Elementary reported to the auditorium to watch a not-very-big portable black-and-white TV for a Mercury capsule splashdown in the Atlantic. We were all worried that it could miss and veer back into space forever. (It went OK.)

When I was in elementary school, a man came to the school and sang songs about Black Holes. Needless to say, I was terrified.

I’ve been fascinated by space exploration for my entire life. My family tells me that my first word was “moon.” Now I work as a NASA contractor, on a mission to the Moon (LRO). I’m grateful to be standing on the shoulders of giants, the men and women before and beside me that helped NASA and all space agencies achieve what they have. And we’re only at the beginning of the adventure.

Phobos as viewed (in false color) by NASA's HiRISE camera in 2008.

Mars has not been a happy place for the Russian space program. The nation’s attempts to explore the Red Planet, going back more than 50 years, have produced a long litany of failures. The most recent misfire came 15 years ago, when the instrument-laden Mars 96 probe, instead of heading out into the solar system, burned up in the atmosphere and scattered pieces over Chile and Bolivia.

That crash effectively put the Russian planetary program out of business — until now.

On Tuesday a Zenit rocket is scheduled to lift off from Kazakhstan to start the Phobos-Grunt spacecraft on its 10-month voyage to Mars. If all goes well, on Valentine’s Day of 2013, after several months of circling the planet, the lander will touch down on the surface of the moon Phobos to start collecting samples of dirt (“grunt” in Russian). Four days later, a return vehicle will lift off in the moon’s low gravity and bring the samples back to Earth.

We’ll have more details on the Phobos-Grunt mission next week. Meanwhile, here’s some background from Anatoly Zak, the author of our 2008 article, and an animation (with Russian subtitles) from the Roscosmos space agency that shows how it’s all supposed to go.

Cue the Lawrence of Arabia theme. Actually, I prefer the soundtrack that the Mars Exploration Rover team used for this time-lapse video showing Opportunity’s 13-mile trek from Victoria crater to Endeavour crater. They took accelerometer data from the rover and converted it to audible sound, which gets louder when the robot is moving over rocky ground, and quieter when it’s crossing sand dunes. The trip to Endeavour took three years, compressed here to three minutes. Here’s a view from Opportunity‘s navigation camera, taken just last Monday.

What draws me to Titan is the mystery. After 50 years of robotic exploration most other objects in the solar system have given up their secrets, at least to a first order. But Saturn’s largest moon is hidden by a perpetual cloud cover, so we have to work harder to see what’s underneath.

Which is why I find maps like this so appealing. A research team led by the University of Nantes in France stitched together six years’ worth of infrared images taken by the Cassini spacecraft over the course of 70 Titan flybys to produce a global mosaic. Because infrared penetrates the clouds, the surface is revealed. In this false-color composite, highlands appear bright and equatorial dune fields appear dark.

The mosaic varies in resolution, depending on how close Cassini was to the surface at the time a particular image was taken. But some of the fuzzy areas will get sharper. Another 48 Titan flybys are planned between now and 2017.