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Questions tagged [perseverance]

Perseverance is a NASA Mars rover launched in July 2020 and landed in Jezero crater in February 2021. Use with the [mars] tag when asking about the environment it's in. Use with [ingenuity] when asking about its helicopter drone.

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How were Perseverance's cables "cut" after touching down?

In the NASA conference today regarding Perseverance's successful landing on Mars, they talked about how you can see the cable that held the rover in this picture below (I circled the cable). I'm ...
F16Falcon's user avatar
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28 votes
7 answers
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Curiosity and Perseverance landing - with so much dust blown everywhere, what's the point of the skycrane?

Curiosity and Perseverance were landed using the rather complex skycrane system because it would prevent the rockets from contaminating the landing site. But the video shows a great deal of dust being ...
ikrase's user avatar
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27 votes
8 answers
8k views

Can we power things (like cars or similar rovers) on earth in the same way Perseverance generates power?

I was watching a video on the engineering of Perseverance and it states that the rover is powered by 4.8kg of Plutonium Dioxide. I was wondering if that similar process of electricity generation can ...
ParthianShotgun's user avatar
23 votes
3 answers
4k views

Could Mars Rovers be lighter or faster if they didn't have to be tested on Earth?

Watching this video of Perserverance being tested on Earth, it occurred to me that requiring it to stand, drive, climb, etc. under 1g is, in some sense, overkill. Could this (or other) rovers be made ...
Steve Linton's user avatar
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18 votes
1 answer
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Did the Perseverance and Curiosity skycranes land gently, or did they crash?

I don't think I found any references as to further fate of the skycranes after detaching the rovers other than them "flying away" from the rover. Does NASA make any minimal effort to land ...
SF.'s user avatar
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17 votes
2 answers
1k views

Why is Perseverance's RTG lifetime only 14 years?

The MMRTG uses Pu-238, which has a half-life of 87.7 years. So after 14[1] years it should be able to output a little over 80% of the power, which naively to me seems like it should be enough. What is ...
StanOverflow's user avatar
15 votes
1 answer
980 views

Why do Ingenuity's legs differ?

In the pictures below, I notice that not all of the legs of Ingenuity are the same (look at the end of them, directly touching the surface). It looks like a single one is different than the other 3. ...
zabop's user avatar
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14 votes
4 answers
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How did the Perseverance rover land on Mars with the retro rockets apparently stopped?

Is there an explanation for the absence of any sign that would demonstrate the eight retro rockets in the image below were really working? It seems that no gas was getting out of the nozzles. The sky ...
azot's user avatar
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14 votes
1 answer
2k views

Now that Perseverance is "hot" (RTG in place) and before it gets to deep space, how will it stay cool?

As soon as they are assembled MMRTGs continuously produce about 2,000 watts of heat energy. That dips only slightly when they are connected to a load and producing electrical power (about 125 watts ...
uhoh's user avatar
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13 votes
2 answers
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Did the Curiosity and Perseverance rover brains do the driving from Earth to Mars?

This interesting answer to Why did NASA intentionally crash-land the Curiosity and Perseverance sky cranes on Mars? leads me to wonder if the Curiosity and Perseverance rover computers were in charge ...
uhoh's user avatar
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13 votes
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Will Perseverance be captured into Mars orbit before descent or would it be a direct descent into the atmosphere?

Will Perseverance be captured into Mars orbit before descent or would it be a direct descent into the atmosphere similar to an aerocapture maneuver? It would be helpful if someone could add any ...
Bruce Vici's user avatar
13 votes
1 answer
844 views

How did Ingenuity get such a sharp image of the shadow of its own high-speed helicopter blades?

On the NASA released self-picture of Ingenuity, shot while hovering over Mars' surface the shadow of Ingenuity with its blades is very clean. The rotational speed of the blades is said to be around ...
Tom's user avatar
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12 votes
2 answers
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Why make Ingenuity survive some "brutally cold Martian nights" before its first attempt at flight?

NASA's Perseverance Mars Rover tweeted: Ingenuity, the Mars Helicopter I carry, is working as expected. I’m currently charging it, but once I set it down, it’ll rely solely on its solar panels. If it ...
uhoh's user avatar
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12 votes
1 answer
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What are the lines on the wheels of the Perseverance rover called? Are they different than Curiosity's?

CNET's NASA narrows down Mars 2020 rover names: Hello, Fido? includes the image below. I'm not sure if the rover is moving and a rolling shutter was in use, or if the lines on the wheels are really ...
uhoh's user avatar
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12 votes
0 answers
440 views

What would be the disadvantages in Ingenuity accompanying Perseverance at a safe distance when the flight test program has been a success?

This answer to the question "How long could the Mars helicopter Ingenuity keep up with the Perseverance rover if it wanted to?" reasons that indeed it could for years ! But according to the ...
Cornelis's user avatar
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1 answer
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Why did NASA release Perseverance (rover) videos with a stop motion effect?

This is the video released by Perseverance (rover): Why did NASA release Perseverance (rover) videos with a stop motion effect?
Mike Trench's user avatar
11 votes
1 answer
2k views

Will Curiosity and the Mars 2020 rover be able to communicate with each other via a Mars orbiter?

Curiosity's UHF antenna on sol 2439 Could Curiosity and the Mars 2020 rover communicate with each other via the MRO orbiter ? And would it have advantages ? (Like: " I just saw a meteorite, and it'...
Cornelis's user avatar
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11 votes
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742 views

Will InSight be able to pick up vibrations from the landing of Perseverance or Tianwen?

In roughly six months, two spacecrafts will be landing on Mars. Will the seismometers on InSight be able to detect vibrations from any of those landings?
usernumber's user avatar
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For how long could the Mars helicopter Ingenuity keep up with the Perseverance rover if it wanted to?

Wikipedia's Mars Helicopter Ingenuity says: It could potentially cover a distance of up to 300 metres (980 ft) per flight. Perseverance is somewhat similar to Curiosity which drove about 22970 ...
uhoh's user avatar
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11 votes
1 answer
482 views

Perseverance individual sample collection post-mission; what stops them from blowing away or getting covered and hidden by dust?

I have been seeing videos that the plan after Perseverance is done collecting samples to distribute them in 'strategic' locations around Mars for another rover to drive around and pick up later. Why ...
necroncryptek's user avatar
10 votes
3 answers
4k views

How did the Ingenuity helicopter clear tests even without being deployed on Mars?

It looks like the Ingenuity helicopter is not yet deployed. NASA's Ingenuity Mars helicopter clears tests, inches closer to historic first flight in April Source So how did the Ingenuity helicopter ...
Marc Stewarts's user avatar
10 votes
4 answers
5k views

Why first 2 images of Perseverance (rover) are in black and white?

Why first 2 images of Perseverance (rover) are in black and white? I truly disappointed later I was thrilled after seeing the picture of view of the rover Perseverance from the skycrane during ...
Alan Marks's user avatar
10 votes
1 answer
1k views

What is pictured in this SHERLOC camera?

This picture was taken by one of the cameras on the Perseverance rover. What is pictured here ? And what is the purpose of this image?
usernumber's user avatar
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10 votes
1 answer
2k views

Why is there no microscope on the Mars 2020 rover?

Good magnification microscopes seem both light and cheap. As far as I could find out, there hasn't ever been one on any Mars rovers. The closest I could find is the Mars Hand Lens Imager (MAHLI) which ...
SCH's user avatar
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10 votes
1 answer
915 views

What is all this about? (photo of several small cup-like structures on top of Perseverance)

I have been trying to figure out what this arrangement is for. Could it be where the mast had its 'face' buried prior to deployment? The various cups seem to fit exactly with lenses and positioning ...
giles tester's user avatar
9 votes
3 answers
4k views

Will there be live HD television from Mars with the Mars 2020 mission?

Is it known if live HD television from Mars would be possible with the Mars 2020 rover mission and if an extra channel would be possible just for relaying HD TV to make live broadcasts possible ? ...
Cornelis's user avatar
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9 votes
4 answers
4k views

Is Perseverance unable to move?

The wheels show no sign of use, there are no wheel tracks in any of the raw images, and the where-is-the-rover page shows no movement from Sol 0. Why not?
Lou's user avatar
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9 votes
1 answer
580 views

Why is the northeastern region of Syrtis Major Planum a selected landing site for the Mars 2020 mission?

Image below: One of the 3 selected landing sites, on the left side of Jezero crater, which is also selected ! A workshop for the Mars 2020 Rover mission was held in February 2017 that selected 3 ...
Cornelis's user avatar
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9 votes
1 answer
1k views

Why does the Perseverance rover have such complicated shaped spokes in its wheels?

Phys.org's NASA's Perseverance Mars rover gets its wheels and air brakes has some interesting photos includes some nice photos and below I've included a cropped section of a photo of one of ...
uhoh's user avatar
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9 votes
2 answers
275 views

What could Perseverance listening to Ingenuity reveal?

On 2021 May 7, the science lead for Perseverance's SuperCam Mars microphone said about that microphone's recording of a flight of the Ingenuity helicopter: We had carried out tests and simulations ...
Camille Goudeseune's user avatar
9 votes
1 answer
268 views

What are those plastic hoses on Perseverance used for?

I've been trying to find out what this plastic tube is for that got cut during descent. It's a single tube so as far as l can tell not a loop. It ends in the lower right corner of the body (in the ...
RAD6000's user avatar
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9 votes
1 answer
337 views

Why shadows of the blades on Ingenuity navcam photos looks brighter than shadows of the legs?

Consider this photo from the Ingenuity navcam on the first (?) flight: You can see that the shadows of the blades seem brighter than the shadows of the legs. It's especially noticeable when they ...
dcoder_mm's user avatar
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9 votes
1 answer
202 views

Is MOXIE's oxygen ready to breathe or is there CO2 and/or CO that would need to be scrubbed?

MOXIE splits two molecules of martian carbon dioxide into two molecules of carbon monoxide and one molecule of oxygen. Breathing elevated levels of CO2 ranges from unpleasant (to say the least and ...
uhoh's user avatar
  • 149k
9 votes
1 answer
242 views

How heavy were Perseverance's balance masses?

Perseverance ejected two 70 kg "cruise balance masses" just before it became an airplane, to move its center of mass off axis and increase its angle of attack from 0° to about 16° to make it ...
Camille Goudeseune's user avatar
9 votes
0 answers
818 views

Is there anything that could speak 900 MHz ZigBee that could hear Ingenuity helicopter besides the Perseverance rover?

Interest is piqued by What could be strong arguments against Ingenuity following Perseverance at a safe distance when the flight test program has been a success? Question: Can anything at Mars, or ...
uhoh's user avatar
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8 votes
1 answer
1k views

Why is there a black donut in Perseverance's SkyCam? Is it always used to block the Sun? (sky cameras on Earth don't) How does it work?

At mars.nasa.gov/mars2020/multimedia/raw-images I found Mars Perseverance Sol 258: SkyCam Camera which shows a sky camera (180° FOV fisheye view of the sky) image. I've included it below along with ...
uhoh's user avatar
  • 149k
8 votes
1 answer
1k views

Why are RTGs so inefficient?

I recently learned about how an n-type and p-type "sandwich" with different thermal properties can create a potential difference in the presence of a temperature gradient. The subsequent ...
Vikrant Sharma's user avatar
8 votes
3 answers
461 views

Might Ingenuity tip over?

While Ingenuity patiently waits for its preflight checks to pass, how likely is it that a wind gust could tip it over? How strong and how rare a gust? Those rotors have plenty of area. (Surely NASA ...
Camille Goudeseune's user avatar
8 votes
1 answer
4k views

Which operating system is Perseverance running?

A few days ago, I watched Perseverance being launched towards Mars. I know that there is lots of very specific hardware embedded into the rover, so, very likely, there has been software written by ...
publicdomain's user avatar
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8 votes
1 answer
892 views

Sending Mars rover to the Moon

What would happen if a Mars rover (let it be Sojourner, Spirit, Opportunity, Curiosity or Perseverance) would be sent to the Moon instead of the Mars? Let's not deal with the landing and let's ...
Kozuch's user avatar
  • 1,493
8 votes
2 answers
224 views

Can Perseverance know which direction sound is coming from?

From the NASA website about Perseverance, the rover has two microphones on board. Can it use both microphones at the same time to pinpoint the direction a sound is coming from? Has this already been ...
usernumber's user avatar
  • 5,068
7 votes
1 answer
2k views

Could Ingenuity survive if Perseverance failed?

For the purposes of this question, we will assume that they both landed successfully. Ingenuity was deployed properly. Then, Perseverance drove away, and then Perserverance say hit a large rock and ...
Starship - On Strike's user avatar
7 votes
2 answers
2k views

Why did Curiosity not have a camera on board to record the landing?

So we've had a question asking why Perseverance had a camera to record the landing and one asking if Curiosity did, but I can't find any information about why Curiosity did not have a camera on board ...
Phiteros's user avatar
  • 5,626
7 votes
2 answers
726 views

Perseverance Rover to drive carefully for months while helicopter hangs from underside?

The image below is cropped from the high resolution version of NASA's Mars Helicopter and Perseverance Rover PIA23824 and shows the helicopter in it's stowed position on the underside of the rover ...
uhoh's user avatar
  • 149k
7 votes
2 answers
294 views

Difference between "mafic floor" and "olivine-bearing floor" in Jezero crater? (Perseverance landing site)

Figure 3: Main geologic units within Jezero crater shown on a basemap constructed from images from the High Resolution Imaging Science Experiment (HiRISE) camera onboard the Mars Reconnaissance ...
uhoh's user avatar
  • 149k
7 votes
1 answer
2k views

How will NASA set Perseverance to enter the atmosphere of Mars at the right location after traveling 7 months in space?

The Perseverance rover is set to land on Jezero crater on Mars, in February 2021. It is clear that if you want to land in location X you need to enter the atmosphere at point Y. From the animated ...
riorio's user avatar
  • 515
7 votes
2 answers
578 views

How tall are the "cliffs of the delta" in the Perseverance rover's landing ellipse?

edit: For all the cliff-doubters in comments, here's a quote of Project Scientist Ken Farley in the new NASA video After the Landing: An Update about NASA’s Perseverance Mars Rover after ...
uhoh's user avatar
  • 149k
7 votes
1 answer
601 views

Mars helicopter ingenuity stress testing at end of mission?

Ingenuity is mainly a proof-of-concept to the main Perseverence mission. It worked very well considering the challanges. When the helicopter is done being "useful", will it be stress-tested ...
Kevin Kostlan's user avatar
7 votes
1 answer
361 views

How does the Dragonfly helicopter for Titan compare to Perseverance, Ingenuity and a human in terms of size, mass, weight and daily range?

It wasn't until Are Perseverance's wheels really this big? that I realized just how big Curiosity and Perseverance probably are. Writing What is the pop-up circular disk with spiral pattern in ...
uhoh's user avatar
  • 149k
7 votes
1 answer
442 views

Balancing Perseverance Mars Rover; couldn't they just "move stuff around a little" rather than add 6+ kg of dead weight?

The NASA News item NASA's Perseverance Mars Rover Gets Balanced says: Just as an auto mechanic places small weights on a car tire's rim to bring it into balance, the Perseverance team analyzed the ...
uhoh's user avatar
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