695: Spirit

Explain xkcd: It's 'cause you're dumb.
Revision as of 06:57, 5 October 2014 by (talk) (Explanation: Add final contact date.)
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On January 26th, 2274 Mars days into the mission, NASA declared Spirit a 'stationary research station' expected to stay operational for several more months until the dust buildup on its solar panels forces a final shutdown.
Title text: On January 26th, 2274 Mars days into the mission, NASA declared Spirit a 'stationary research station' expected to stay operational for several more months until the dust buildup on its solar panels forces a final shutdown.


Anthropomorphism is attribution of distinctly human characteristics to animals or non-living things. We make parallels between ourselves and objects, to the point where some people even jocularly worry about hurting the feelings of, say, an automobile. We call ships "she". We see human faces in objects like the arrangement of lights on the front of a car.

The Spirit Mars rover, like many high-functioning robots in real-life and fiction, shares many physical similarities with a human being or animal. It has a head, eyes, neck, body, legs, feet, arms and a hand. And it strikingly resembles sentient robots from fiction, such as Johnny 5 from Short Circuit, or WALL-E from the film with the same name.

Thus, this comic explores what the Spirit rover's life would be like if it were sentient. The rover was never intended to return to Earth, and lasted 5 1/4 active years on the Martian surface, far exceeding its expected mission duration of 90 Martian days. A sentient robot might assume that after his initially planned 90 Martian day mission was over, he'd get to return home. So, though this heartbreakingly did not happen, Spirit, possibly in a pun on his name, keeps his hopes alive as he continues analyzing rock after rock for years.

It would be cruelty of the absolute worst kind to create an intelligence with such feelings, and then abandon it on an uninhabited planet with no intention of ever bringing it home. So one is rather heartened that the Spirit rover is, in fact, just a programmed machine, and we explained to it very carefully that it was embarking on a one-way trip.

It is worth pointing out that Opportunity, the rover's twin, has been even more wildly successful and remains operational.

The title text has an apparent miscount: January 26, 2010, is more like sol (Martian day) 2156 by JPL's mission status site, not 2274.

Final contact was on sol 2210 (March 22, 2010).


[The Spirit rover is on the surface of Mars.]
Spirit (thinking): 89 days to go!
Day 88 of 90
Spirit (thinking): Two days until I go home!
Day 91 of 90
Spirit (thinking): ?
Day 103 of 90
Spirit (thinking): Maybe I didn't do a good enough job.
Day 127 of 90
Spirit (thinking): Maybe if I do a good enough job, they'll let me come home.
Day 857 of 90
Spirit (thinking): I thought I analyzed that rock really well.
Spirit (thinking): It's okay, I'll do the next one better.
Day 1293 of 90
Spirit (thinking): Sandstorm. Power dying.
Spirit (thinking): But a good rover would keep going. A good rover like they wanted.
Day 1944 of 90
Spirit (thinking): Oh no.
Spirit (thinking): I'm stuck.
Spirit (thinking): Did I do a good job?
Spirit (thinking): Do I get to come home?
Spirit (thinking): Guys?
[Spirit rests in the middle of a vast Martian landscape.]


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Uhh, I'm laughing on this comic for almost three , but this explain is still not complete:

- the mission was not only 90 days
- Spirit did many great investigations
- that "Free Spirit" campaign should be mentioned after it did stuck in the deep sand in early 2010
- and Opportunity is a still operating companion on Mars in 2013
- there is much more..., ask Randall!--Dgbrt (talk) 21:19, 10 June 2013 (UTC)

Do you guys really not see all the typos in this? not even the one in the first comment? -- (talk) (please sign your comments with ~~~~)

You see a problem? Fix it. Click "Edit" at the top and help improve the article! There is nothing you can do that can't be reversed with a few mouse clicks, so don't worry about messing things up. NealCruco (talk) 02:49, 10 August 2014 (UTC)

I just feel :'( SilverMagpie (talk) 03:38, 4 April 2017 (UTC)

I have no idea, but this particular comic makes me sad. Truly a tearjerker...Boeing-787lover 16:36, 19 May 2018 (UTC) -- Xkcdreader52 (talk) (please sign your comments with ~~~~)

You folks do know about Spiritrover's LJ, right? Opportunity was Opportunitygrrl, and there was also Fuse-sat. Yngvadottir (talk) 21:41, 22 October 2018 (UTC)