Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [mars]

Questions about the science or exploration of the planet Mars.

0
votes
0answers
16 views

Is it possible to restart life Mars? [duplicate]

I have learnt that the reason for no life existing on Mars was due to absence of a magnetic field strong enough to ward off incoming solar radiation. We could just instate an artificial one if that ...
2
votes
2answers
40 views

Terraforming Mars - would Mars lose its water?

If we were to terraform Mars would Mars slowly lose its water i.e., some of the water would sink deep into the dry Martian crust or combine with other elements in the soil? Mars has been dry for ...
1
vote
1answer
23 views

How will “InSight's onboard communications gear perform a radio-science experiment to shed further light on Mars' innards?” (Space.com)

The Space.com article How NASA Mars Lander's 'Steampunk' Claw Will Work (Video) says: InSight's mission aims to provide a detailed look at Mars' interior structure and composition. The lander ...
1
vote
0answers
47 views

Would the atmosphere of Mars become less dusty if the ice deposit in Utopia Planitia could be uncovered?

In 2016 a large ice deposit has been found within the Utopia Planitia region on Mars by the SHARAD instrument on board of the Mars Reconnaissance Orbiter. The thickness of the deposit ranges from 80 ...
1
vote
1answer
53 views

NASA's Curiosity Rover - Carbon Isotope Ratio of Methane?

The following is taken from Sinha & Rral , 2015: "NASA's Curiosity rover has the capability to search for organic compounds and to identify the chemical and isotopic composition of the Martian ...
1
vote
1answer
84 views

NASA's Mars helicopter blade & weight

I've been really interested in NASA's Mars helicopter and have been reading bits of articles on that recently. But I have a few questions I hope people can help me understand — in this article, it ...
4
votes
1answer
73 views

Methane and the Search for Life on Mars

I was wondering, if we measured the carbon isotopic ratio of methane on Mars and found that it was very negative (i.e. it contained more carbon-12 than carbon-13), would this provide definitive proof ...
3
votes
2answers
168 views

Terraform via moving Ceres To Mars orbit, using ion drive

EDIT: Apparently the accepted physics has changed, and we now use the convection model for generating planetary magnetic field, not the dynamo model. Next thing you know people will be telling me ...
1
vote
0answers
35 views

Current state of the art Mars spacesuit?

What's the current state of the art spacesuit for use on Mars? I'm wondering about things like size, shape, materials, layering, performance, weight and comfort. In particular, how thin can the main ...
4
votes
1answer
72 views

Have any systems on any Mars rovers failed (even partially) as a result of a dust storm? (besides loss of solar power)

Have any systems on any Mars rovers failed (even partially) as a result of a dust storm? There is the obvious problem of loss of solar power, but the failures there are the result of loss of power. ...
2
votes
0answers
25 views

What type of software is used to make radiation shielding simulations for use in Space or Mars?

Hopefully this is relevant to the board and doesn't get deleted. Quick background: In Thailand. Grad student, mechanical engineering, with very limited knowledge regarding nuclear or space radiations. ...
1
vote
0answers
30 views

How much CO₂ could the wind through a tunnel within the deposit near the south pole of Mars sublimate?

Within the CO₂ deposit near the south pole of Mars, according to this article 3 subunits have been found with one having the top CO₂ layer of about 300 meters thick covered by a water ice layer with a ...
4
votes
2answers
100 views

Comparing gravity wells: Earth from the Moon vs Surface of Mars

Hypothetically if a manufacturer was considering building a factory on the Moon or on Mars, which location has the smaller gravity well to escape? Assuming final destination of the goods produced is ...
5
votes
1answer
150 views

Would a Martian landing and take off require a flame trench/deflector?

Flame trenches/deflectors are essential for avoiding reflections of acoustic waves from damaging the rocket system while taking off. This is discussed in this YouTube video - Why doesn't the sound of ...
1
vote
1answer
125 views

Has the Curiosity rover ever communicated directly with Earth via its high-gain antenna? Signal strength & data rate?

In the question How does Curiosity know how to point and move it's high gain antenna in real time? I show an image of the hexagonal, articulated high gain antenna on the curiosity rover, as well as ...
5
votes
3answers
1k views

Will spacex launch in an inclined fashion while returning from mars?

Considering the toughest thing in launching a rocket is to achieve the tangential velocity, launching horizontally might give us an added advantage for delta V requirement. This can't be done in ...
1
vote
1answer
140 views

Could an inflatable heat shield be used on the SpaceX Mars Lander?

Could light weight inflatable heat shields be used like parachutes from NASA to increase surface area for the SpaceX Mars lander further decreasing velocity? Where would be the best placement of them? ...
6
votes
2answers
219 views

What would the BFS' landing on Mars be like, if it is different from this animation?

The question What is the terminal velocity on Mars? and its answer has got me rethinking the BFR's reentry and propulsive landing simulation/animation shown in the recent SpaceX video First Private ...
0
votes
1answer
216 views

What is the terminal velocity on Mars?

How would I calculate the terminal velocity of Mars? Bonus: Could entry of Mars with balloons work like this similar to the linked question?What would the BFS' landing on Mars be like, if it is ...
2
votes
1answer
44 views

What are the temperature and pressure inside the CO$_2$ deposit on Mars?

Within the CO$_2$ deposit near the south pole on Mars, according to this article 3 subunits have been found with one having a top CO$_2$ layer of about 300 meters thick covered by a water ice layer ...
0
votes
1answer
176 views

Will the sinking of a nuclear reactor into the CO$_2$ deposit on Mars cause a huge explosion? [closed]

Within the CO$_2$ deposit near the south pole of Mars, according to this article 3 subunits have been found with one having a top CO$_2$ layer of about 300 meters thick covered by a water ice layer ...
2
votes
1answer
85 views

Is there a known way a nuclear heating device could move around in the CO$_2$ deposit on Mars? [closed]

What would be an easier way to start terraforming Mars than evaporizing the CO$_2$ deposit near the south pole ? An autonomous nuclear heating device of about 1000 kg for instance, that landed on ...
2
votes
0answers
35 views

What would make Mars a better candidate for life to originate on? [closed]

The Allan Hills meteorite, found in Antarctica in 1984, lead to speculation that bacteria from Mars may have traveled from Mars to Earth between 17 million and 13 000 years ago - blasted from Mars 17 ...
2
votes
1answer
69 views

What were the 21 potential landing sites for the Mars 2020 mission?

In August 2015 more than 150 scientists attended a conference to evaluate 21 potential landing sites for NASA's next rover, a mission called Mars 2020. Out of those proposed landing sites the Mars ...
4
votes
0answers
70 views

How long will it take to develop the technologies necessary for a Mars Mission? [closed]

As I'm doing the math of when we can expect to actually see a Mars mission, I'm finding it difficult to believe we can get there until we complete several additional programs to prove technologies we'...
4
votes
1answer
167 views

How does one get Context Camera (CTX) images from Mars with certain identification numbers?

According to Wikipedia the Context Camera(CTX) on board of the Mars Reconnaissance Orbiter had already mapped 50% of Mars by Februari 2010. Should it not have to be possible to get access to all these ...
5
votes
0answers
94 views

Where on Mars are the known craters or collapse features with very high depth/diameter ratio?

Figure 1 of this article about craters and collapse features on Mars with high depth/diameter ratios shows that ratios higher than 0.2 are exceptional. This presentation of the Program of the Second ...
-5
votes
2answers
77 views

What are the real evidence that proved NASA robots has gone to Mars? [closed]

As we've all seen from the videos of NASA with their robots exploring in a desert like surface of Mars. But is it real? since there's no actual footage that came out the landing of the certain robots ...
17
votes
3answers
4k views

Can we detect the cell phone, satellite phone, or walkie talkie of someone walking on Mars from Earth?

We certainly cannot see a person walking on Mars from Earth. But what if the person is trying to use a cell phone, walkie talkie, or satellite phone? Although he won't have much luck using any of ...
12
votes
2answers
3k views

Could we see someone walking on Mars from Earth?

Can any telescope be capable to see some one walking on Mars? How much time dilation would there be? What is the theoretical best resolution?
6
votes
1answer
89 views

Spacing for Martian Seismic Network

Assuming 4 stationary probes equipped with seismometers similar to InSight, how far apart should they be placed to optimize studying the deep interior of Mars? Is it necessary for them to be spaced ...
1
vote
1answer
59 views

Which is stronger per Hz, radio signals from a Mars spacecraft, or Mars' blackbody radiation?

It just occurred to me that while Mars is cold from a human's perspective, from a radio engineer's perspective it's still kind-of hot. When even the largest DSN antennas are pointed at Mars to ...
11
votes
1answer
194 views

Are there microclimates with better weather conditions on Mars?

On Earth, a microclimate mostly refers to an area which differs from the surrounding areas in temperature or humidity. And what about Mars ? Are there places with atmospheric conditions that are ...
4
votes
0answers
109 views

Are we still able to terraform Mars using greenhouse effect?

In the last month, a group from University of Colorado, Boulder, published a paper on Nature Astronomy entitled "Inventory of $CO_2$ available for terraforming Mars", which was highly publicized on ...
2
votes
1answer
103 views

How to understand this complicated plot for Mariner 4's mid-course correction (to Mars)?

The 2015 DrewExMachina blog post Mariner 4 to Mars has an interesting looking plot! Below is the associated text, and the image caption. But I still do not understand all of the lines and labels in ...
-2
votes
3answers
211 views

Would a circular saw on one arm and a trowel on another on the Mars 2020 rover add scientific value? [closed]

Edit: I changed the question from one arm with a shovel to two arms, with one with a circular saw and the other with a trowel, some time after the first answer of @Hobbes. I did this because in his ...
3
votes
1answer
59 views

Level of radiation on surface/ocean of Mars AFTER terraforming

I am a Mars enthusiast, and lately have been wondering how safe Mars would be to live on after it hypothetically has been terraformed into a pseudo Earth. Obviously, the bigger health hazard would be ...
5
votes
2answers
525 views

Which potential landing sites were identified at the MSL Landing Site workshops?

In the Wikipedia article Timeline of Mars Science Laboratory it is mentioned that at the first MSL Landing Site workshop, 33 potential landing sites were identified, and that by the second workshop in ...
0
votes
1answer
206 views

Could a reentry powered monorail and flywheel make a kinetic engine for lift?

On reentry could a flywheel spin on a magnetic bearing creating a centrifugal force to keep the ship level whilst creating a plasma air pocket from the pits in the rotating heat shield? This would ...
2
votes
1answer
59 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 ...
2
votes
1answer
122 views

Artificial Magnetosphere to Terra-form Mars?

I was reading a 2017 article on a potential that Mars could be terraformed using a magneto-tail; A Future Mars Environment for Science and Exploration. This would basically entail sticking a giant ...
8
votes
3answers
208 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 ...
2
votes
0answers
54 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 ...
4
votes
4answers
358 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 ...
5
votes
1answer
135 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 ...
1
vote
1answer
81 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 ...
4
votes
2answers
230 views

What is the deepest trench or fissure on 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 ...
5
votes
1answer
191 views

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

Does Mars have any environment in which a plant, virus or otherwise would be capable of living on Mars without an artificial environment? Is there anything that can live below the Armstrong Limit on ...
1
vote
0answers
55 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?
13
votes
1answer
240 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 ...