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Questions tagged [rovers]

Questions about vehicles sent to extraterrestrial bodies, generally for use in data collection.

173
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6answers
14k views

Can I borrow a lunar rover?

According to Wikipedia there are 3 LRVs sitting on the moon, in very well defined locations. Would China, or whomever gets to the moon with a person next, be able to get in and drive around in an LRV ...
51
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3answers
16k views

Curiosity: Why did they “reinvent the wheel” instead of using pressure tires?

Curiosity rover's wheels seem a bit tired and show signs of wear and tear, as reported for example in this Discovery News article from May 22, 2013. This damage only increased since then and wheels ...
40
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1answer
8k views

What was NASA's “Hack” to improve Opportunity's memory in 2015? Did it help?

The transcript of the 2015 NPR podcast NASA Hopes A Hack Will Overcome Mars Rover's Memory Gap says: You know how it goes - you're getting a little older, your memory starts to go, you forget where ...
39
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5answers
14k views

Why aren't we sending quadcopters to mars?

After watching the MARS series on National Geographic I noticed that they sent one of their crew members down a chasm to check for ice. I wondered, why they did not just take a regular commercial ...
36
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8answers
5k views

Wheels vs. tracks for rovers

On Earth, there are plenty of examples of vehicles that roam difficult terrain having tracks instead of wheels, while all (at least those I am aware of) extraterrestrial rovers have wheels. Is there ...
33
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1answer
2k views

Have any of the rovers ever recorded a solar eclipse on Mars?

I've heard a rumor that Curiosity rover sent a recording about Phobos covering the Sun on the Martian sky. Did it happen? If yes, how frequently could such things be recorded?
32
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3answers
11k views

About how long will Curiosity last on its nuclear power?

Curiosity, we know, has no little nuclear reactor, it has a RTG. Great! But how long will it last? For how many years will our little 1-ton friend be roaming around another planet?
29
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1answer
5k views

Who took the Curiosity rover's self-portrait photo from the surface of Mars?

Curiosity is missing an arm, can you help us find it? The self-portrait photograph of the Curiosity rover from the Gale Crater is probably one of the most well known ones of this particular rover of ...
28
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5answers
5k views

Why are there so few lunar rovers?

I'm a big fan of Curiosity and Opportunity, the Martian rovers. The science is over my head, but the images they've captured are mesmerizing. It seems unusual to me that we have two active Martian ...
27
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4answers
6k views

Can either Opportunity or Curiosity explore the state of Spirit?

If you have a rough map of Mars a picture would help, but how far away are the three big rovers on Mars from each other? Is there any possibility of "roadside assistance" on Mars to "unstick" and ...
27
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2answers
4k views

Planetary rovers - six wheels vs four?

Just wondering, why are unmanned rovers almost always using six wheels (adding more weight) as opposed to four wheels? Is it for added traction, redundancy, balance, or a combination of these factors?
27
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3answers
2k views

What happens to defunct lunar and Mars rovers? What technological barriers prevent humanity from creating a perpetual rover?

What happens to defunct lunar and Mars rovers? What technological barriers prevent humanity from creating a perpetual rover with sun batteries or nuclear portable reactors for use on Mars, the Moon, ...
23
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5answers
7k views

Why hasn't NASA planted a stationary lab on Mars yet?

Why does NASA send rovers such as Curiosity instead of remotely building a small building on the surface of Mars?
21
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2answers
6k views

Why did China land a rover on the moon?

Why did China land the Chang’e-4 rover on the moon? What was it supposed to accomplish or explore?
21
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1answer
2k views

Why do the Mars rovers move so cautiously?

All the Mars rovers tend to move very slowly. For example, Curiosity moves at an average speed of 30 metres per hour and a maximum speed of 90 metres per hour. Why is this so? Is it because of safety ...
18
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3answers
3k views

How did astronauts navigate the Lunar Roving Vehicle (LRV) over the surface of the Moon?

The Lunar Roving Vechicle (LRV), also known as Moon Buggy, was used as a form of transportation on the surface of the Moon during the Apollo program. What system did the astronauts use for ...
18
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3answers
1k views

How much can the Mars rover Curiosity do autonomously, after four years of operation?

I was under the impression (when asking this question) that over the past four years that experience by ground operators and programmers had lead to a configuration where the Mars rover Curiosity ...
17
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1answer
1k views

What inspired the circular panels on the Phoenix Lander and InSight rover?

The solar panels on the Phoenix Lander and InSight rover seem to take on an iconic new look of circular solar panels. As far as I could see solar panels on landers and rover took up the maximum ...
17
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1answer
975 views

What problems led to the use of the Sky Crane system used by Curiosity?

We all know about the fancy 'sky crane' system used on NASA's Curiosity rover. The rockets slow the descent to 1 ½ mph and power a sideways parry to avoid the faster falling chute. As Sky Crane ...
16
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3answers
7k views

How do you 'make oxygen' on Mars?

This morning's BBC News says that a 2020 rover mission to Mars will "make oxygen". There is a brief line indication that it will extract it from atmospheric CO₂, but no other details. What process ...
16
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1answer
1k views

What are the black and white circular patterns on the Curiosity rover?

On the Mars Curiosity rover, there are black and white circular patterns or marks spaced around the rover, as seen here marked in lime green:     What are these? If I had to guess, ...
14
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3answers
3k views

a “speedy” lunar rover?

Moon's synodic day is 2551443 seconds. Its circumference is 10921 km. At sustained 15.4km/hour a rover traveling along its equator would retain full sunlight at all times; at higher latitudes that ...
14
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1answer
1k views

How did the spirit rover land right way up after bouncing

After watching an animation of how the Spirit rover landed on Mars, I was wondering how the rover managed to end up the right way up after bouncing around?
14
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1answer
620 views

Are data we get from surface rovers accurate?

NASA have already sent several surface rover vehicles to the surface of planets, mostly to Mars. Just think about Curiosity. Compared to the fact that these rovers are remotely controlled and have ...
14
votes
1answer
3k views

Why are Curiosity's wheels aluminum rather than titanium?

I was just reading this article on how Curiosity's aluminum wheels are getting pretty dinged up. Usually titanium alloy is considered an upgrade from aluminum alloys in most applications, from ...
14
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1answer
319 views

What was the solution to the half-amp the heater on Opportunity was drawing?

I'd recently read Roving Mars by Steven Squyres and in it he talks about how one of the heaters in the arm of the Opportunity Rover was drawing a half-amp over night and it was severely costly to it's ...
13
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2answers
1k views

Can the satellites in Martian orbit be put to use providing a rudimentary GPS system on Mars?

This website conveys the impression a rover on the Martian surface necessarily navigates by dead-reckoning. Stereo images are used to determine how far a rover has travelled; an advancement over older ...
13
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2answers
3k views

How does the Curiosity rover survive dust storms on Mars?

According to the answers to this question, a dust storm on Mars can last for many days. Dust is a serious problem for mechanical joints if they use lubrication, because it may stick to the lubricant ...
13
votes
1answer
676 views

How does NASA keep radiation from frying rovers?

I know that on Mars, radiation levels are quite high (turns out lack of an atmosphere does that). On the rovers that are sent to Mars, etc. How is radiation kept from playing havoc with the rover's ...
12
votes
1answer
867 views

Were the Lunokhod Lunar rovers remote controlled in real time?

How were the Soviet Lunochod rovers during the 1970s controlled from Earth? Did they take images on the fly and a guy with a joystick steared it around to reach targets of opportunity? Well, probably ...
12
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1answer
922 views

Does NASA have any plans for future Mars rovers after Curiosity?

Curiosity should last a very long time - up to around 14 years. My question is whether NASA has any plans for a Mars rovers after Curiosity. If so, are any specifics known?
11
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2answers
1k views

How will the ExoMARS Rover keep it's solar panels dust-free and collecting maximum power?

update: Current events makes this question even more poignant sols 5183 to 5189, Aug. 23, 2018 - Aug. 29, 2018: Team Continues to Listen for Opportunity Curiosity selfie has been released just a few ...
11
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2answers
679 views

What risk management options are available for Mars orbiters and rovers to mitigate threat of impacting with Siding Spring cometary debris?

I was reading this article on New Scientist titled Fiercest meteor shower on record to hit Mars via comet. Long story short, the Oort cloud comet C/2013 A1 Siding Spring is predicted to near-miss Mars ...
11
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1answer
337 views

Who decides where Curiosity goes?

I've been wondering for a while who gets to decide where Curiosity goes. I'm not wondering so much about who gets to actually give it the commands (that seems fairly easy to find), but who decides its ...
11
votes
1answer
703 views

The upcoming landing of Chang'e 3 on the Moon - Is there detailed information about it anywhere?

China is supposed to land a rover on the Moon soon (2013). This will be the first landing on the Moon from any nation in quiet a few decades - if none of the Google-Lunar-X-Price teams is faster, of ...
11
votes
1answer
239 views

Can the rovers on Mars see the comet flyby?

Within a few days Comet ISON is going to make a close flyby of Mars. Will the rovers on Mars have a chance to take a look at the comet as it approaches Mars?
10
votes
3answers
970 views

What is the fastest rover that has ever traveled on the surface of an extra-terrestrial body?

What is the fastest rover currently moving on the surface of another celestial body? At what speed with our technology currently does physics restrict our speed limits on the surfaces of solar system ...
10
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3answers
489 views

How many memory banks does Opportunity have?

Sparked by the comments to this answer, how many memory banks does Opportunity have? I'm specially interested in the flash memory but any other info is also welcome. According to this JPL press ...
10
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2answers
1k views

Curiosity wheel damage

The surface of Curiosity's wheels have picked up quite a lot of damage with significant holes beyond the "JPL" holes that were designed in. By contrast the surface of Opportunity wheels have held up ...
10
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2answers
532 views

Titan rover survival challenges

The Huygens probe didn't last long. What are the challenges of operating a rover on the surface of Titan for at least a few months and what technologies would be used to overcome these?
10
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2answers
2k views

Differences in the design of a commercial Moon rover and a commercial Mars rover?

News in May, 2018: Spaceflight Now NASA cancels lunar rover, shifts focus to commercial moon landers Washington Post Stunning scientists, NASA’s only moon rover just got canceled Space.com NASA Kills ...
9
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7answers
1k views

How could a fast powerful rover on Mars be powered electrically?

Background The rovers on Mars are slow and weak. If I am to believe what I read, MSL Curiosity only produces 1/6th of a horsepower electric effect, 125 watt. In order to perform tasks like deep ...
9
votes
2answers
263 views

Could electricity propel Curiosity on Venus?

To-date the humans have dispatched surface missions to Mars Luna Venus Mars has a thin atmosphere. Luna lacks one. Venus has a soup-thick atmosphere. Landing a static craft on Venus is one thing. ...
9
votes
1answer
742 views

How will the NASA 2020 Mars rover's instrumentation differ from Curiosity?

The Wikipedia page on the plans for NASA's 2020 Mars rover says that it will be designed similarly to Curiosity but will differ in scientific instrumentation because of its goal: to investigate an ...
9
votes
1answer
645 views

Does the Curiosity rover really have a chance of driving to the top of Mt. Sharp?

This great answer suggests the limiting high altitude to which the Curiosity rover on Mars could drive would be the top of Mt. Sharp (Aeolis Mons) - in the center of Gale crater. I'm wondering, is ...
9
votes
1answer
216 views

What's the record for the longest time a deep space craft has functioned without a reboot?

The question How is Voyager 1 still operating? and the interesting comparison to the record times that Earthbound servers have run without reboot got me thinking about deep space spacecraft. I'm ...
9
votes
1answer
404 views

Did Curiosity rover communicate to the ground station during its descent phase?

During descent phase and entering Mars' atmosphere, was the rover's descent controlled by the Earth based ground station, or by the rover itself? What are the technical challenges, when communicating ...
8
votes
2answers
794 views

How do rovers brake/decelerate?

Going by known record the humans have, over the last few decades, started to look around in the Solar System. Apart from astronomy, and allied sciences - there have been space landing missions to ...
8
votes
1answer
1k views

Why is Curiosity so light compared to Opportunity?

Look at that: ...and now tell me how comes Opportunity weighs 530kg and Curiosity 900kg. It looks, like by volume, Curiosity is good 4x larger, if not more. Plus it contains heavyweight RTGs, its ...
8
votes
1answer
274 views

With the correct antenna and transmitter, could the Sojourner rover be reactivated?

The Sojourner rover was deployed as part of the Mars Pathfinder mission. At the end of the mission, the Sojourner rover was still operable. But the base station that the Mars Pathfinder carried failed....