Questions tagged [mars]

Questions about the science or exploration of the planet Mars.

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8
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1answer
879 views

Is there any independent evaluation/report on the feasibility of SpaceX going to Mars by 2024?

According to Independent report concludes 2033 human Mars Mission is not feasible An independent report concluded that NASA has no chance of sending humans to Mars by 2033, with the earliest such ...
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1answer
95 views

Does the polygonal pattern on the floor of this “crater” on Mars mean that there's water ice below its surface?

This presentation of the Program of the Second MSL Landing Site Workshop shows an image of a "crater" near the equator that is 2.4 km wide and 750 meters deep ! On the Mars Image explorer you can ...
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0answers
105 views

Why will the NASA Mars drone helicopter use off the shelf batteries?

I read from this paper under section G. that the JPL Mars helicopter scout will use standard 18650 cells from Sony. I’m sure that a company like NASA has the capability of acquiring much more advanced ...
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1answer
70 views

Would wind shear or other atmospheric conditions delay a rocket launch FROM the surface of Mars?

On earth we have launch windows because of this and constant weather monitoring is needed right up until launch. Would this be required on a return trip from Mars given that the speed of the wind on ...
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31 views

Methods of lightning detection on Mars?

Teslarati's NASA’s next Mars rover will pave the way for humans includes the graphic below which is an artists conception of a dust storm on mars. It shows what looks like lightning or some kind of ...
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64 views

How much energy would be needed to liquify 1 gram of atmospheric oxygen on Mars?

I've been told I have no Moxie but I still need oxygen to live on Mars. I see that Mars' atmosphere is 0.14% oxygen and my sad moxiless self wants some. I want to make a low power refrigerator to ...
3
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1answer
66 views

Are Mars' atmospheric CO₂, O₂ and CO in equilibrium? Are sunlight or chemical reactions involved?

According to the NASA JPL video linked below the top five gases comprising the martian atmosphere include CO₂, O₂ and CO. Do the proportions reflect some chemical equilibrium? Are sunlight or chemical ...
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55 views

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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0answers
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+100

During the MSL (Curiosity) Mars atmosphere entry, when was the last time the Reaction Control System used?

I understand that the Mars Scientific Laboratory used its Reaction Control System during its entry into the planet's atmosphere. At what altitude was the RCS last used? "Seven Minutes of Terror" ...
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0answers
25 views

Could the NOMAD instrument on the TGO detect methane at night with sufficient reflected sunlight or artificial light?

Nadir and Occultation for MArs Discovery (NOMAD) is a 3-channel spectrometer on board the ExoMars Trace Gas Orbiter (TGO). Both the solar occultation (SO), and the limb nadir and occultation (LNO) ...
7
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1answer
175 views

How did the Curiosity rover on Mars manage to crack open a large area after drilling a hole?

The answer to this question has a link with this image, an animated GIF showing before and after views of a drill site on Mars. How did drilling at the site manage to disturb such a large area and ...
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1answer
73 views

How much more quickly does night come on Mars compared to Earth? Will it be easier to see Mercury there?

This answer to Visible sky features from Mars got me thinking. On Earth it takes a while for the sky to get dark after sunset, which makes looking for Mercury a challenge because it follows the Sun ...
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1answer
132 views

Visible sky features from Mars

For the purpose of this theoretical question, please assume the following criteria: The person will remain on the planet for at least a few years allowing for Mars to complete an orbit. The person ...
4
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1answer
135 views

Are there any images of Curiosity during the sky crane operations?

This answer has a nice video of Curiosity's descent to MARS. The images come from the Mars Descent Imager (MARDI), which is mounted on the underside of the rover. Was there any camera mounted on the ...
5
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1answer
123 views

Will the Mars 2020 rover be able to record high-framerate video of its helicopter?

According to this answer, there have been no instances of video recorded from beyond lunar orbit. Mostly, this makes sense as rovers and spacecraft are served just as well with pictures and nothing ...
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0answers
198 views

How to make Martian soil [migrated]

My son wants to replicate some experiments and try to grow plants in Martian soil for his A-level science project. I know NASA have managed to produce soil that mimics Martian soil, however I also ...
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0answers
70 views

Venus-Mars-Venus cycler?

Is it possible to create a cycler that can travel from Venus to Mars, then back to Venus? Using as little delta-V as possible. To expound a bit further, it would need to travel from Venus to Mars ...
5
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2answers
141 views

Terraforming Mars - Concentrating the Sun's energy on Mars using a lens to have the same effect as moving closer to the sun

I just read an earlier question about changing the orbit of Mars to be more earthlike. This was shot down because of the massive amounts of energy/time required. So, if the problem has to do with the ...
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0answers
49 views

Curiosity's drive wheel motors' manufacturer?

Although there are answers listed elsewhere on this site about the power requirements for the Curiosity Rover drive wheels, does anyone know what company provided those drive motors?
9
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1answer
153 views

Are the lines on the wheels of the Mars 2020 rover wavy? If so, why?

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 ...
10
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2answers
339 views

What likely is the chemical composition of the thin piece of material on the surface of Mars on the image below?

Note: The MAHLI images below were acquired when both the two groups of white light LEDs and the ultraviolet LEDs were off. When looking for the damage on the wheels of Curiosity on the raw images i ...
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7answers
12k views

Could we wait for Mars to come to us?

This may be a stupid question but I didn't find much information online about it. The concept is simple, could we launch a vehicle into space from Earth, stop right on Mars trajectory and wait for the ...
2
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1answer
100 views

Has SpaceX said much publicly about uncrewed landings on the surface of the Moon or Mars?

It seems like this would be very good publicity as well as a necessary proof of concept, and SpaceX certainly has some experience with robotic/automated landings on Earth. I'm assuming this will be ...
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0answers
40 views

Predictive simulation of gait on Mars?

In the Journal of Biomechanics, Volume 45, Issue 7, 30 April 2012, Pages 1293-1298, Predictive simulation of gait at low gravity reveals skipping as the preferred locomotion strategy (PDF file of an ...
4
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1answer
482 views

Mars and back, staying only a few days

This article states that once you arrive at Mars you'll only have a couple of weeks before you'd have to begin a fresh Hohmann transfer back to Earth, otherwise you'll have to hang out on Mars for ...
5
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1answer
115 views

How Safe Is Phobos in Terms of Radiation Exposure?

I am wondering if Mars' body provides enough protection against radiation on Phobos. The lack of magnosphere is a significant factor highly worsening the radiation exposure, making the planet ...
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0answers
45 views

What does “clumps and streams” of hydrogen leaving Mars' atmosphere really mean? Are there images of them?

This excellent answer to Just how huge is Mars' cloud of hydrogen? links to the 14 October 2014 Nature News item "Hydrogen Cloud Blows Off Mars", by Alexandra Witze, https://www.nature.com/news/...
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0answers
132 views

Why did NASA want the Z-2 prototype spacesuit need to mimic the appearance of sportswear?

NASA has been considering a new type of space suit, the Z2 Spacesuit, "in order to protect NASA astronauts embarking on a new class of mission, NASA has to build a new class of space suit. Far off ...
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1answer
103 views

Mars twilight photos

From the file:PIA19401-MarsCuriosityRover-GaleCrater-Sunset-Animation-20150415.gif Of the four images below from the gif, one of them depicts twilight. Were there anymore twilight images in this ...
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1answer
118 views

How are marsquake epicenters determined using only one seismometer?

This tweet says: Cerberus Fossae is the first active seismic zone ever discovered on Mars. Located about 1,600 kilometers east of @NASAInSight lander, this huge extensive tectonic structure was the ...
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1answer
104 views

Just how huge is Mars' cloud of hydrogen?

NASA Goddard's July 2018 press release NASA’s MAVEN Spacecraft Finds That “Stolen” Electrons Enable Unusual Aurora on Mars says: But two puzzles make this type of aurora seem impossible at first ...
3
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1answer
140 views

Hypersonic Inflatable Aerodynamic Decelerator and skip-entry to Mars

Has NASA studied whether the Hypersonic Inflatable Aerodynamic Decelerator could allow for a skip-entry*, or anything other than direct entry to Mars, to aid in a craft's deceleration? *Skip-entry or ...
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2answers
179 views

How big a nuke would be needed to break Phobos out of orbit?

Phobos Radius: 11.267 km Orbital period: 8 hours Equatorial rotation velocity: 11.0 km/h (6.8 mph) (at longest axis) With an 8 hour orbit around Mars it must be going at a fair clip already which ...
5
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1answer
114 views

What does NASA intend to do about the Martian day in regards to the astronauts who go there?

The Martian day is about 40 minutes longer than an Earth day. What does NASA intend to do about the Martian day in regards to the Mars mission? Will they adjust the astronauts to their landing day ...
19
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4answers
5k views

Is a midspace space station between Earth and Mars practical?

A recent answer included the following: For example if you were to start a colony on mars, in this order for supplies and other necessities to be delivered there would need to be a network of space ...
5
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0answers
131 views

Design considerations for a space suit going to Mars?

Essentially, I am trying to design a heat exchanger for a space suit traveling to mars. From my understanding, I assumed that the energy generated from the space suit relates to the astronaut as well ...
4
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1answer
111 views

Mars mission success rate vs. outer planets success rate

I've heard discussion of the Mars Curse, with the very high failure rate of missions to the planet. Comparing NASA Mars missions to NASA outer solar system missions since the beginnings of the 1970's ...
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0answers
84 views

Have we looked in the right place for life on Mars?

I know it's (extremely) unlikely there is (& perhaps ever was) any life on Mars but having had a glance through the missions I can find I can't help thinking we've not really looked in the best ...
7
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2answers
492 views

How fast could the Tesla Cybertruck drive on Mars?

Elon Musk said "Tesla Cybertruck (pressurized edition) will be official truck of Mars". Lets estimate its driving on flat sands to achieve some sort of maximum performance at 0.38 g, 0.07 bar and −70°...
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0answers
40 views

How applicable can Martian soil samples from a handful of sites be to Mars at large?

Martian soil samples have been said to be heavily contaminated with perchlorate salts, which will obviously have tremendous impact on efforts to colonize Mars. But what reason do we have to believe ...
2
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1answer
122 views

What is the purpose and necessity of this giant structure being used in tests of China's Mars lander?

Question: What is the purpose and necessity of this giant structure being used in tests of landing hovering and searching techniques to be used by China's Mars lander? It is shown in images (and a ...
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2answers
512 views

Velocity of a rocket needed to get to Mars

At 2:16 in this video, Don Pettit says he used the Rocket Equation to determine the velocity of the rocket needed to travel to Mars, which was 16 km/s. I am not sure as how he did it though, and was ...
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1answer
157 views

Which scientific articles together give proof of all the chemical elements found on Mars?

Wikipedia about the elemental composition of Mars: Based on these data sources, scientists think that the most abundant chemical elements in the Martian crust, besides silicon and oxygen, are iron, ...
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0answers
108 views

Could not silica aerogel dramatically increase the atmospheric pressure on Mars?

In the NASA article Want to Colonize Mars ? Aerogel Could Help a study about the potential of aerogel as a building material on Mars is reviewed. In an experiment 2-3 centimeters of silica aerogel ...
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0answers
109 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 ...
5
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2answers
141 views

How do you mine water on Mars?

Water is required for human explorers of Mars and it is also widely expected to be used to synthesize methane rocket fuel for the return trip (by combining the water with CO2 and energy to create ...
3
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2answers
123 views

Would spacecraft rot or degrade over time faster on Mars, on The Moon, or in space?

One question I really wanna ask; do spaceship's rot? If they do degrade, does being on Mars, on The Moon, or in space increase the rotting speed of the spaceship? If so, in which environment would ...
12
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3answers
3k views

Differences between vehicles used on the Moon and the ones used on Mars

What are the differences in design considerations between Moon rovers and Mars rovers?
2
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1answer
74 views

Curiosity landing system versus Spirit/Opportunity's [duplicate]

Spirit/Opportunity used airbags to land while Curiosity had a "carrier" with thrusters and chords - which to me sounds heavier and much more complex, therefore also riskier. It seems that it would ...
5
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1answer
119 views

Why are Viking LR results not sufficient evidence of life on Mars?

Gil Levin, one of the scientists involved with the 1976 Viking mission to Mars, has claimed and continues to claim that there is life on Mars, based off the positive results of the Labeled Release (LR)...

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