Questions tagged [mars]

Questions about the science or exploration of the planet Mars.

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11
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1answer
183 views

Are there any possible methods for keeping surface water on mars?

I've been reading this wikipedia article on terraforming mars. One of the major issues with terraforming mars is essential molecules and elements escaping the planet. There have been several ...
4
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2answers
307 views

What type of rock or soil on Mars will give Nostoc Commune cyanobacteria the best chance to survive there?

Photo taken by YAMAMAYA Cyanobacteria are a group of photosynthetic bacteria, who use the energy of light to synthesize organic compounds from carbon dioxide, and producing oxygen this way. Nostoc ...
12
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1answer
773 views

Why NASA's sudden renewed (apparently) interest in Wax hybrid engines? Which property is so attractive now?

update: This answer links to Larry Russel Kellogg which links to NASA Tests Environmentally Friendly Rocket Fuel where images of Test firing of new Paraffin-Based Fuel at NASA Ames Research Center 1/...
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1answer
40 views

What are the dimensions of the magnetic shield at the l1 Lagrange point for mars [closed]

Does anyone know the dimensions of the magnetic shield at the l1 Lagrange point for mars if we run 1 GW through it?
18
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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 ...
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2answers
162 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 ...
3
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1answer
102 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 ...
4
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1answer
104 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 ...
4
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1answer
391 views

Could the BFR Tanker be used as an artificial gravity counterweight for interplanetary travel?

An alternative storyline to the Mars transport architecture: Tankers refuel starship, last Tanker gets mounted on the Starship for the Mars orbital injection burn, once on a Martian trajectory tanker ...
5
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0answers
127 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 ...
2
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0answers
77 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 ...
4
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1answer
237 views

What's the deepest a trench could theoretically be dug on Mars?

Given the physical characteristics of Mars (the crusts thickness, it's composition, gravity, etc) how deep a trench (that could be expected to continue to exist indefinitely, or rather, for periods of ...
7
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2answers
430 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°...
10
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1answer
486 views

Is there any reason Cyanobacteria or Lichens can't survive on Mars?

According to this article "Mars atmosphere is supersaturated with water" & according to answers to this physics stack exchange question conditions do exist on the surface of Mars where fluid water ...
2
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1answer
116 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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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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2answers
480 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 ...
-1
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1answer
98 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, ...
2
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0answers
124 views

How were Mars' zero elevation datum defined? What are their shapes?

Discussions on Boiling ponds and pools on Mars? led me to Wikipedia's Mars; Geography and naming of surface features which says: Because Mars has no oceans and hence no "sea level", a zero-...
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0answers
104 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 ...
4
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4answers
458 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 ...
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2answers
1k views

Does the Curiosity rover really have a chance of driving to the top of Mt. Sharp?

This great answer suggests the limiting high altitude to which the Curiosity rover on Mars could drive would be the top of Mt. Sharp (Aeolis Mons) - in the center of Gale crater. I'm wondering, is ...
4
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2answers
133 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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0answers
90 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 ...
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4answers
8k views

Why not travel to Mars in 2 months?

Just to clarify... I've made some research and generally know what the case is, didn't mean to make the question sound stupid... :) I know there is a thing called Hohmann transfer orbit, named after ...
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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?
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 ...
13
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2answers
399 views

Has Curiosity started driving backwards yet?

I'm curious if curiosity has started to drive backwards, at least occasionally, as part of an effort to reduce the rate of damage to the wheels. This has come up after writing this answer to the ...
19
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1answer
1k views

What problems led to the use of the Sky Crane system used by Curiosity?

We all know about the fancy 'sky crane' system used on NASA's Curiosity rover. The rockets slow the descent to 1 ½ mph and power a sideways parry to avoid the faster falling chute. As Sky Crane ...
2
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1answer
72 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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3answers
702 views

Is there a cost effective way to obtain Nitrogen/Argon on Mars for usage in a human breathable habitat?

Is there a cost effective way to obtain Nitrogen/Argon on Mars for usage in a human breathable habitat? It is my understanding that a sustainable human breathable atmosphere is made of two major ...
5
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1answer
806 views

What is the white stuff emerging from a hole on the surface of Mars?

Edit: It can almost certainly be excluded that the white spot was caused by Curiosity's ChemCam's laser, because it doesn't make sense that the laser was used at that time without taking images with ...
25
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2answers
6k views

SpaceX Starship landing on Moon or Mars: why doesn't it fall over?

How does the SpaceX Starship design accommodate uneven landing surfaces that might not be stable under the weight of the vessel? I don't understand how SpaceX's Starship would be able to land on ...
3
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1answer
62 views

Is it recorded and/or documented when and where Curiosity's ChemCam's laser has zapped on Mars?

The article with the title "NASA Rover's Images Show Laser Flash on Martian Rock" tells us that the ChemCam's laser had zapped more than 600 rock and soil targets on Mars since Curiosity landed in ...
4
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1answer
110 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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3answers
3k views

How will the crew exit Starship when it lands on Mars?

When SpaceStarship lands Mars, the crew will be almost 50 meters above the surface. How will they get out with all their equipment?
15
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3answers
2k views

Is a magnetic field really needed to terraform Mars?

I see so many discussions about how the main roadblock to terraforming Mars is its lack of a magnetic field. If Mars had an atmosphere as thick as Earth's but no magnetic field, wouldn't it still take ...
3
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0answers
85 views

Could the bright spot on the image captured by Curiosity have been caused by a data transmit or storage failure?

The image above, one of a total of 21 images shot over a 4 minutes span, was captured by Curiosity on June 16,2019 or sol 2438 on Mars. Only in this image a bright spot shows up, while the next and ...
6
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1answer
193 views

Where exactly on Mars was Curiosity when this image was taken?

The BGR article NASA’s Curiosity rover saw something flash on Mars, and people are freaking out is one of many nearly identical clickbait articles about a recent image that contains a bright spot. ...
18
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2answers
798 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 ...
7
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2answers
400 views

Is there an end-of-mission for Mars One?

So far, it appears Mars One will be one-way mission to Mars, to establish a colony with no options to return to Earth, astronauts staying on Mars to the end of their lives. But does that mean the ...
12
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4answers
2k views

Boiling ponds and pools on Mars?

In the related questions Can you take a bath on Mars? & How would swimming on Mars feel, given the lower gravity? we learn that bathing and swimming on Mars is much like it is on Earth. Some ...
3
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1answer
71 views

Transmission of video and audio signals

I know this is a silly question.In july,2019 NASA's insight captured sound by wind gusts.Here is a link of video that shows the movement of robotic arms and sound of wind on mars. ...
5
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2answers
185 views

Has Mars quaked yet? Any scientific speculation when it might?

We have lots of questions about the Mars lander InSight's seismometers, and I remember reading that they have detected microseisms from wind blowing over InSight's solar panels and the surface of Mars ...
3
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1answer
151 views

When going to Mars, how do you measure exact distances to determine course corrections?

When probes fly to Mars, they must adjust their trajectories multiple times during transit to ensure correct orbit insertion. They fire their small onboard rockets a little bit to do this. But how do ...
2
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0answers
116 views

Would it not be safe to introduce perchlorate consuming bacteria on Mars, at least for controlled tests?

Since the discovery of the toxic perchlorate being globally distributed in the martian soil the chances for microscopic life there are thought to be greatly reduced.. Even in the RSL's, once thought ...
8
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1answer
170 views

What was the driving record of each rover on Mars in one sol, and when?

Both Mars rovers Opportunity and Spirit had a top speed of 180 meters/hour on flat hard ground, but their hazard avoidance software caused them to stop every 10 seconds for 20 seconds to observe and ...
2
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1answer
132 views

Will the Rosalind Franklin (ExoMars) rover solar panels be able to clear themselves of dust by tilting?

The BBC News item 'Rosalind Franklin' Mars rover assembly completed contains a short video, and I show some screen shots below. It looks like the panels unfold twice, from two stacks of three, to six ...
5
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1answer
155 views

Can we grow potato in mars soil?

In the movie The Martian (Wikipedia, IMDB) the astronaut grew potatoes using "soil" from the surface of Mars. Does the surface of Mars have something equivalent to soil? If so, even after being ...
2
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1answer
76 views

Would snow fall on the surface of Mars because of uncovering the ice deposit in Utopia Planitia?

In 2016 a large ice deposit was 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 about 80 ...