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Questions about the science or exploration of the planet Mars.

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1answer
33 views

Low arrival V-infinity?

So I am modelling an Earth - Mars low thrust trajectory in a simple manner. I'm telling my model to not model any trajectories where the spacecraft is moving any more than 200 m/s quicker or slower ...
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0answers
47 views

Artificial Magnetosphere to Terra-form Mars?

I was reading this article on a potential theory of how we could terraform Mars using a magneto-tail. This would basically entail sticking a giant magnet that carried a charge between 10,000 and 20,...
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3answers
163 views

Have we considered sending people on no-return missions?

This question is more about morals and philosophy and is a rather dark one. Anyway, has it been considered and/or is it a viable idea to send an astronaut to another planet to die, or is it ...
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0answers
47 views

Practical rate (e.g. kg/day) that carbon could be harvested from CO2 in the Martian atmosphere and climate?

There is frequent discussion of using CO2 in the Martian atmosphere to synthesize carbon-containing compounds. One example is methane for propulsion, another: Can materials be found to make plastic ...
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4answers
301 views

What is the most economical way to vaporize the CO₂ deposit near the south pole of Mars?

In April 2011 NASA announced that the Mars Reconnaissance Orbiter had found a large, buried deposit of frozen carbon dioxide at the planet's south pole. It has a volume of about 12,000 cubic ...
4
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1answer
122 views

How will the Exomars rover communicate back to Earth?

I see here that the Exomars rover has only two UHF monopole antennas. Two UHF monopole antennas are used to communicate with Mars orbiters, including the Trace Gas Orbiter. Does it mean that it ...
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1answer
76 views

What is the real depth of the Mojave crater on Mars?

The Mojave crater on Mars is interesting because among other things, it has alluvial fans that look remarkably similar to landforms in the Mojave desert. On the image1 above the crater has about ...
2
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2answers
99 views

What is the deepest part of Mars?

Is there any particular deep areas of Mars in which a person could survive with only an oxygen supply without a pressurized suit? Or how deep would one have to be in Mars not to need a pressurized ...
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0answers
70 views

Is there any life from Earth that can live on Mars?

Does Mars have any environment in which a plant, virus or otherwise capable of living anywhere Mars? What if everything was provided to the living organism but the atmospheric pressure?
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0answers
47 views

Where does one go to school to be in a space program? [closed]

I am interested into going to college. What school or degree should I take to get a seat in the Mars missions? Space Camp? Which school has the highest student to space program statistic?
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1answer
198 views

What would sounds on Mars be like?

Figure there was a microphone on the surface of Mars, exposed to the atmosphere. If it recorded stuff, how would it sound? E.g. walking through sand, stuff falling down onto rock, a rocket engine, the ...
2
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0answers
66 views

How does Mars have a Bow Shock and proton aurora? What is a hydrogen corona?

I just saw the NASA video Mars Proton Aurora below and I'm confused. Without a planetary magnetic field, what force produces a bow shock in the solar wind at Mars, thereby producing a "proton aurora"?...
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0answers
38 views

Why would ISRO's MOM-2 Mars orbiter mission's apoarion already be decided in such an early call for proposals?

ISRO's announcement Announcement of Opportunity (AO) for future Mars Orbiter Mission (MOM-2) says in part: It is now planned to have the next orbiter mission around Mars for a future launch ...
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1answer
39 views

How does the contest for naming ExoMars work?

ESA is holding a contest to collect suggestions for a proper name for what is currently referred to as the ExoMars rover mission to Mars (mission page). Apparently, Rovy McRoverface and Marsy ...
2
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1answer
116 views

Why not a landing platform with solar cells on the Mars 2020 rover for the helicopter scout?

In May 2018 the Mars Helicopter Scout (MHS) was approved to fly on the Mars 2020 mission. Author: NASA/JPL-Caltec. It's a solar powered helicopter drone with a mass of 1.8 kg and a coaxial rotor ...
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0answers
62 views

Transportation on the Mars I Air

Due to the thin atmosphere generating lift on Mars is difficult at a lower speed, Flying is hard until aircraft go supersonic and then it becomes difficult to control(Ref.). The landing would not be ...
2
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0answers
76 views

Transportation on the Mars I Underground

Mars has dust storm which can affect the transportation on the ground then the underground transport system seems better than on ground transport. An underground loop transport system which is under ...
5
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1answer
507 views

Elliptical orbits transformed to “equivalent” circular orbit

I'm trying to transform Mars' elliptical orbit into its circular "equivalent". I understand that if the semi-major axis is used as the radius, and the mean angular rate and period are kept the same, ...
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0answers
107 views

Could a shuttle be built for Mars?

Mars does have an atmosphere, but is there enough atmosphere to glide, shed speed and land if there was a runway? What would this require from the shuttle, in terms of aerodynamics?
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1answer
113 views

Is there evidence of a general trend among scientists regarding the terraforming of Mars? [closed]

I was wondering if there is a general trend or inclination of the scientific community about actually terraforming Mars, i.e. if scientists are for or against this move (again, general trend - ...
2
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1answer
123 views

Expected differences between concrete prepared on the ISS and matched samples prepared on Earth?

The Spaceflight Now article Cygnus arrives at station with CubeSats, quantum physics experiment describes experiments that will be done on the ISS mixing small samples of either cement or concrete (I ...
3
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1answer
100 views

Differences in NASA long term human space exploration since 1989?

I'm doing some research in to the various NASA long term programs for human space exploration, and I'm having a really hard time figuring out how they are really different. It seems that since the "90 ...
9
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2answers
1k 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 ...
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5answers
363 views

Is the “Mars blue dune” actually blue? And what makes it so?

NASA recently released an image of a blue dune on Mars. The accompanying story seems to suggest to me that it is a false color image - some property of that part of the image is detected and rendered ...
3
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1answer
120 views

Is it a waste of time and resources to colonize Mars? [closed]

To a large extent we have good confidence that Mars used to be a very wet world with a thick atmosphere. Now it's clearly very dry and the atmosphere is extremely thin. So if we colonize Mars with the ...
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1answer
158 views

A way to go to Mars and come back

I have only 6 months of knowledge about rocket science but I was wondering why can't we do the following to go to Mars and come back to Earth: We can have enough fuel in a rocket at maximum to just go ...
8
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1answer
170 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 ...
72
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5answers
10k views

Could “peak Apollo levels” of support have gotten NASA astronauts to Mars in the 1980's?

In an "alternate universe" where NASA continued to receive a mandate, funding and public support at say peak Apollo levels, could another ten or twenty years have gotten boots on Mars, with astronauts ...
2
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1answer
71 views

What are the technologies that can identify, validate, and quantify water-rich locations on Mars?

As the discussion progresses from the likelihood that there is water on Mars through yes, near the poles, now to to Is there really a frozen lake near the equator on Mars? and There's a lot of ...
6
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0answers
86 views

Is Seasonal Affective Disorder a concern for Mars colonists?

We're all discussing effects of Martian sunlight exposure on structures, plants, solar panels, but I don't think I've seen any discussion of its effect on humans. There's a number of effects of ...
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2answers
124 views

How does one get the exact location of imaged features on the surface of Mars?

The image above is from the article "Evidence from the Mars Express High Resolution Stereo Camera for a frozen sea close to Mars' equator". It shows 3 flooded or partially flooded craters 4.8, 2.3 ...
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5answers
258 views

Would it be feasible to use natural light to grow plants on Mars?

Would we need to use natural lighting to grow crops on Mars instead of just going with artificial LED lights? What are the pros and cons of using natural lighting, and do you think that a future Mars ...
5
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1answer
75 views

Why are the gaps in MRO global images of mars so irregular and sometimes filled in?

Moderate Resolution Imaging Spectroradiometer (MODIS) images of Earth snow nice, regular repeating gaps in longitude where the viewing angle is too far for a given pass. But the large GIF shown in ...
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1answer
92 views

Would landing on mars during a storm considerably increase atmospheric drag?

Any chance we could harvest all those dust particles for an significant improvement in aero-breaking capabilities or would it destroy most heat-shields?
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3answers
455 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 ...
39
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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 ...
6
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1answer
351 views

Is there really a frozen lake near the equator on Mars?

Figure 1. Views of plate-like terrain on Mars, and pack-ice on Earth. From the paper linked below. a, Part of an HRSC image of Mars from orbit 32, with a resolution of 13.7 m per pixel, centred at ...
2
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1answer
147 views

Why would bringing samples from Mars back to Earth be a “civilization-level changing capability”?

The Space News article NASA continues Mars sample return mission studies Among those planned missions is Mars sample return, a multi-mission architecture that involves collecting samples of Martian ...
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0answers
19 views

How to use this Google Mars viewer to find this Martian landslide event?

This NASA/University of Arizona HiRise tweet shows this interesting image of a meteor impact crater that triggered a landslide (or maybe a "dust-slide") on Mars. The tweet links to this University of ...
8
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0answers
146 views

Venus vs Mars for colonization

Why is Mars getting so much attention vs Venus, which to me seems like a much more attractive option, in regards to habitability. I've read that the upper atmosphere of Venus has the most Earth-like ...
5
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3answers
124 views

How to calculate the delta-v necessary for a suborbital “transfer” of ice from Mars' pole to equator?

I have a big chunk of water ice that needs to go from (say) one of Mars's poles to its equator. Neglecting the atmosphere, how would you calculate the delta-v necessary for this trajectory, and what ...
20
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1answer
239 views

Rock flipping operation

After the recent announcement of complex organics being found on Mars within the curiosity rover's meager 5cm drill depth, I had an idea about artificially increasing it: Is curiosity rover's arm ...
7
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2answers
134 views

Significance of methane on Mars

Considering the audience of this site, many of you are likely aware that NASA has found methane on Mars. I've heard many people saying that this indicates that life is significantly more likely to ...
9
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1answer
120 views

What exactly are the recent observations of organics on Mars? What's the data?

There is news of organic molecules on Mars, an event in the press. What exactly are the measurements? I've heard something about atmospheric methane, is this determined from some absorption peaks in ...
2
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1answer
97 views

Where are we in the current effort to make mars habitable? [closed]

I feel like this should be a massive effort put forth by all countries. As a civilization, our population is growing at a break-neck rate. Not only would it be a fail-safe should something happen to ...
6
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1answer
167 views

Could a spacecraft be put into such an orbit that it would alternately slingshot around Mars and the Earth?

I was wondering if a spacecraft could be put into such an orbit that it would alternately slingshot around Mars and the Earth. This way it it would be making a continuous trip from Earth to Mars and ...
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1answer
67 views

What is the science behind the variation of Mars' effective sky temperature with latitude and longitude? Why the “hot spot”?

After reading this interesting answer to the question How cold is the Martian sky at night? Or the day for that matter? I found that Mars Global Reference Atmospheric Model 2001 Version (Mars-GRAM ...
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0answers
131 views

Methane on Mars - Can we locate the source?

I know that Methane has been detected on Mars, however there seems to be a lack of specific information about the location and concentration of the Methane. Would it be possible to pinpoint the source ...
9
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2answers
292 views

Is Mars' gravity strong enough to hold a human-breathable atmosphere?

If we ever try to make Mars outdoors habitable, won't the air just keep flying off into the outer space because of low gravity?
2
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1answer
97 views

Inspiration Mars Foundation Mission to mars Current Status?

According to the Wikipedia article Inspiration Mars Foundation: Their website became defunct by late 2015 but it is archived by the Internet Archive. The Foundation's future plans are unclear. ...