Questions tagged [mars]

Questions about the science or exploration of the planet Mars. See wiki for related tags.

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2
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1answer
110 views

How to determine the distance between where Earth and Mars are two specific dates?

How would I find the solar-system-relative distance between where Earth would be on 2106/8/16 and where Mars would be on 2106/10/16, or any combination of dates. Image source-Bing Is there software ...
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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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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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What are the problems humans will face after migration to Mars [closed]

This was the question I was asked to check the research ability. Forgive me because I have just started this topic. What do you think could be the best answer? Background Once upon a time in the ...
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Gravel on Curiosity Rover?

I was looking at a visually impressive Panoramic 360 video derived from photographs taken by Curiosity Rover. I noticed something curious, what looks like small pieces of gravel scattered across the ...
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Could a cubesat propel itself to Mars?

I wrote the answer below to the question Could a cubesat be propelled to the moon? before realizing that it said Moon and I'd written it for Mars, so I've cloned that question and moved the answer ...
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Is there any economical way to move the water from the Martian poles to the people?

update: Water at the poles has some more recent news: Science: 03-August-2018 Radar evidence of subglacial liquid water on Mars EarthSky.org: 28-Sept-2018 Pink lagoon provides clues to possible Mars ...
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Images of Mars Phoenix Lander showing what's happened after more cycles of winter ice build-up?

The Mars Phoenix Lander's End of Mission is an interesting story. It was left in a state such that had it survived the Mars winter of 2008, it could potentially be contacted again in 2010. The ...
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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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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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Could aluminum undergo a thermite reaction with Martian dust?

From what I understand, Martian dust is primarily composed of iron oxide, which is one ingredient for a thermite reaction. If heated to the proper temperature, would aluminum (possibly powdered) react ...
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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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Where on Mars are the possible other 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 ...
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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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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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3D celestial puzzle; why InSight's two RISE horns point slightly south of east, and north of west?

@karthikeyan's excellent answer links to The Rotation and Interior Structure Experiment on the InSight Mission to Mars (Folkner, W.M., Dehant, V., Le Maistre, S. et al. Space Sci Rev (2018) 214: 100. ...
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Will colonists on Mars have enhanced physical mobility relative to an Earth-normal environment?

A Princess of Mars (1912) by Edgar Rice Burroughs in Chapter III describes this "superhuman leap" by the hero John Carter: My effort was crowned with a success which appalled me no less than it ...
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Is it possible that Curiosity Rover measured its own methane or failed doing the spectrometry?

NASA published past June high methane concentrations were measured at Mars. This week, NASA's Curiosity Mars rover found a surprising result: the largest amount of methane ever measured during the ...
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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) ...
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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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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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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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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 ...
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Is it real to patch an opening to the vacuum with plastic tarp and duct tape as in Martian?

In the Martian movie Watney patched a broken door to the martian surface with plastic tarp and duct tape. The pressure on Mars is 0.5 kPa, which is 200 times smaller, that on Earth (100 kPa), i.e. it ...
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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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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 ...
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Is Curiosity allowed to investigate the subsurface of the “clay unit ” near Mount Sharp?

From the bottom image in this article from september 2016 it can be seen that there was a possible path for Curiosity in the direction of Mount Sharp (Aeolis Mons). At the end of januari 2018 however ...
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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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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 ...
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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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Why was the “Presidential Panorama of Mars” called presidential?

From The Astronomy Picture of the Day for 2000 May 14 : Explanation: Scroll right to unfold one of the great panoramas ever taken on the surface of Mars. For best viewing, click and hold the right ...
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Balancing a mirror

A possible way of heating up Mars is to use mirrors to direct more sunlight towards the planet. I am not asking about the feasibility or cost of such a gigantic project, but I have a question ...
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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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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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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 ...
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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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How can Mars have dust storms with such a thin atmosphere?

Mars, as I understand, has a very thin atmosphere. However, it still has weather like this: What causes the thin atmosphere to move fast enough to cause such a monster wave of dust?
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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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How strong is the electric charge capacity of Martian dust storms?

In my answer to What would it feel like to be in a Martian dust storm? I assert that Martian dust storms would be best avoided, and as one of the reasons (besides carrying corrosive chemicals like ...
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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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Mars curiosity rover's Maxon drive motors

I am trying to get information on the maxon drive motors on the Curiosity Rover. Does anyone know know what model of DC brushless motors are used what kind of gear speed reducer is used. Is it a ...
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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?
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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 ...
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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 ...
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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 ...
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Will people living on Mars for several years be able to return to Earth without consequences?

Living without gravity has consequences for the bones and muscles. To counter that astronauts have to do exercise and lifting regularly when they go to the ISS. Are there similar plans to counter this ...
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How much is the difference of gravity attraction between the highest and lowest point on Mars?

Mars has a very high mountain, Olympus Mons (25 km), while Hellas Planitia is a 9 km deep crater. How much would the weight of a person weighing 100kg on Earth, change between the highest peak of ...
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What's the reasonable “window” in days for a Mars-Earth Hohmann transfer?

As any popular science reader knows, when traveling between Earth and Mars, there's a Hohmann transfer opportunity about every two years (I believe it's every 26 months, specifically). What I've ...
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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 ...
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What is the largest hurdle of the mission to Mars?

I was shocked when I recently found out just how long it takes to get to Mars. I've been conducting a very informal survey amongst peers of how just how long people think it takes us to travel to Mars....

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