Questions tagged [perseverance]

Questions about Perseverance, the NASA Mars rover launched in July 2020, landed in Jezero crater in February 2021, and performing an astrobiological and rock-sampling mission.

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4
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1answer
197 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 ...
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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 ...
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Can HiRISE see Perseverance?

The rover Perseverance just landed last week. HiRISE can take high-resolution images of the surface of Mars. Will it be able to take pictures of Perseverance? (Has it already taken images of the ...
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How is parachute cover during Mars EDL prevented from crashing onto parachute or lander upon parachute opening?

MARS2020/Perseverance footage of parachute opening shows that parachute cover ejected by the lander (together with other "things") followed same trajectory of parachute box, until parachute ...
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How did the Perseverance rover land on Mars with the retro rockets apparently stopped?

Is there a plausible 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. ...
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Why is the outline of heatshield for Perseverance (rover) look so odd?

I am asking outline of heatshield for Perseverance (rover) look so odd: I mean it has white outline and lighting on heatshield also odd.
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1answer
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The Mars parachute opened against a black sky on Earth but a blue-magenta sky on Mars during Perseverance landing. How is it possible?

I have discovered two images (see below) and I do not find an explanation for the different color of the sky as seen from below the parachute just starting to deploy. The video with the test performed ...
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Your chance to ask one of the engineers that worked on the Perseverance mission any questions [closed]

I'm gonna keep this short and to the point : My university is doing a video conference with one of the engineers that worked on the perseverance mission. My teacher chose me to ask a question or two ...
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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 ...
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361 views

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 ...
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Are there any illustrations / animations which show how Ingenuity is stored on Perseverance & how to it is perpared for launch?

While I found some articles which provide some information on how the Ingenuity helicopter is stored on Perseverance (e.g here), I did not found any illustrations or animations which show more details....
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Why does the Perseverance Rover do sample caching?

As glad as I am that Perseverance's landing was successful, I'm a bit confused as to why there appears to be so little science equipment aboard the rover (by volume) and why the mission seems to be ...
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137 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 ...
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2answers
111 views

Does Perseverance have a gnomon on it?

Though How many sundials, Sun compasses and gnomons are there on solar system bodies? is as yet unanswered, Wikipedia's https://en.wikipedia.org/wiki/MarsDial currently tells us that only the ...
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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 ...
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1answer
96 views

How does the Perseverance Rover store/process large quanties of images?

Dave Gruel (EDL Cam Sute Lead) mentioned on the surface update press conference (22 Feb) that that they collected 30GB of information, including 23,000 images. Where did this information go? Wikipedia ...
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2answers
167 views

Did mission control track Perseverance in real time during its landing?

I have read that the signal that is transmitted from the rover near Mars to Earth could be delayed for over 5-10 minutes. But NASA's tweet says they are tracking everything in real time. How is this ...
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55 views

Why are there different types of fiducial markers on Perseverance?

I have noticed that there are different types of fiducial markers on Preseverance. While I have seen the round markers on other rovers before, it is the first time that I see the rectengular markers. ...
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1answer
111 views

Why did Perseverance have cameras to record the sky crane operations?

Curiosity did not have a camera on the sky crane that was able to image the lowering of the rover. I'm happy that Perseverance does have cameras, resulting in this awesome video. What was the ...
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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 ...
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1answer
190 views

How did images taken by Perseverance's landing stage reach Earth despite its crash landing?

During Perseverance's powered descent, cameras aboard the descent stage recorded Perseverance's deployment using its Sky Crane. After rover touchdown, the descent stage flew away until it ran out of ...
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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 ...
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Why did NASA intentionally crash-land the Curiosity and Perseverance sky cranes on Mars?

The sky cranes for both the Curiosity and Perseverance landing systems were both intentionally crashed into Mars. According to this answer regarding intentional crash-landing of spacecraft in general, ...
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How do they make sure parachute won't fall on the rover?

Here is the picture of timeline of Perseverance (rover) landing: How do they make sure parachute won't fall on the rover?
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How fast was NASA Perseverance flying at when it hit Mars' atmosphere?

Do we know how fast Perseverance was flying at relative to Mars when it hit its atmosphere? The closest figure I could get to was "over 12,000mph" according to this article: https://www....
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When will SuperCam examine its first target?

The Perseverance rover just landed yesterday. I'm guessing that there first are some checks to do on the rover itself before it starts to do any science, so the science instruments like SuperCam might ...
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How long did the plasma blackouts of Perseverance's signals to MRO and direct-to-Earth last during its seven minutes of terror?

Congratulations to NASA JPL and the Perseverance Team and everyone else who participated and contributed in some way! Watching the live feed of the EDL seven minutes of terror I heard there was a ...
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1answer
183 views

The “NASA's Eyes” virtual broadcasting of Perseverance's Mars arrival

Will the "NASA's Eyes" site show (virually, of course) Cruise Stage separation and atmospheric braking of "Perseverance" in real time? Can I rewind the "NASA's Eyes" &...
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How far will Curiosty be removed from Perseverance?

I'd like to know the distance between the Curiosity rover on Mars (currently at Mount Sharp, I believe) and the landing site of the Perseverance rover (the Jezero crater). Is there an application or ...
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1answer
1k views

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 ...
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Is Perseverance's heat shield's thickness radially symmetric?

I came across this video1 about the Mars 2020 Perseverance rover mission, especially the atmospheric entry phase. It says between about 03:50 and ...
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Trying to modify a JPL guidance algorithm for the Mars Sky Crane and Mars 2020

I've been trying to implement a modification to the JPL guidance law that was used (or very similar to what was used) for the powered descent portion of the MSL mission and I'm struggling to figure ...
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1answer
235 views

Why doesn't the Perseverance rover have markers on its wheels like Curiosity?

The wheels of the Curiosity rover have hole patterns spelling J-P-L in Morse code. The reason why these existed in the first place was to help vision-based odometry and distance measurements, ...
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0answers
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How many square meters of solar panel to power a MOXIE-like oxygen source per person?

If I wanted to live in a box on Mars to write my screenplay about living in a box on Mars, how many square meters of solar panels would I need to power a MOXIE-like CO2-to-O2 converter in order to ...
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107 views

Does Perseverance's SuperCam include a Martian meteorite? If so, why?

An automotive blog claims that There actually seems to be another Martian meteorite being sent to Mars, as part of the SuperCam calibration target. Shouldn’t we be keeping all the Mars rocks we have ...
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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 ...
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Why does NASA now call its rovers “robotic scientists?”

NASA's 2020 July 13 press release about the Mars 2020 mission calls its rover Perseverance a "robotic scientist." Is this press release, or at least this mission, the first usage of this ...
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Will the Emirate Mars Mission, Tianwen-1 and Mars 2020 Mission get closer to each other or spread out on their way to Mars?

Background & Introduction: On August 2, 2020 the brand new Where Is Roadster page Spacecraft launched to Mars in 2020 (announced here) said that it had been: 13 days, 3 hours, 47 minutes and 13 ...
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Why is NASA sending wavy grousers to Mars?

In this answer to What are the lines on the wheels of the Perseverance rover called? Are they different than Curiosity's? and in sources linked therein we've learned that the lines across the business ...
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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 ...
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Has ChemCam been used to characterize the martian atmosphere?

Laser-Induced Breakdown Spectroscopy (LIBS) can be used to measure the composition of a solid, a liquid or a gas. LIBS is the technology used in ChemCam of the Curiosity rover and in the SuperCam of ...
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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?
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Will MOXIE get clogged or chemically degraded by martian dust?

MIXIE, the Mars Oxygen ISRU Experiment is an experiment on the Perseverance rover currently on its way to Mars, that will test solid oxide electrolysis as a way to extract oxygen from atmospheric ...
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1answer
127 views

Could Tianwen-1, Hope, or Mars 2020 image one another en route to Mars?

Which of the optical sensors in operation on the three spacecraft currently en route to Mars (China's Tianwen-1, UAE's Emirates Mars Mission (Hope), USA's Mars 2020 (Perseverance)) could image one of ...
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2answers
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For the three spacecraft now on their way to Mars plus ExoMars, how many have any solar power capability during transit?

Right now EMM Hope, Tiangwen-1 and Mars2020 are on their way to Mars and ExoMars will go next time. For these four spacecraft how many of them have any provisions to use solar power via photovoltaic ...
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1answer
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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. ...
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2answers
539 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 ...
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1answer
84 views

MMRTG- thermal and electrical output

I haven’t been able to find a definitive number for the thermal output (in watts) of the MMRTG used aboard the Perseverance rover. The numbers I’ve seen range from 1950 watts to over 2000. I also ...
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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 ...