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Questions tagged [mars]

Questions about the science or exploration of the planet Mars.

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Artificial gravity on Mars

It is well-known that the lack of gravity during spaceflight is a cause to many sorts of health issues. It is thus expected that Martian gravity (significantly lower than Earth's) will have influence ...
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Are there any past or present plans or proposals to explore martian lava tubes?

Lava tubes on Mars are the prime target for human or robotic missions. They provide protection from radiation, surface conditions, and are thought to have stable internal temperatures. Lava tubes are ...
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Is terraforming inevitable? [closed]

Is only economics and the huge scale (material, spatial, and temporal) of the project the only limiting factor that could stop some groups from succeeding? Will other groups of people having a ...
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193 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 ...
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Cubic meters of martian greenhouse required

I'm trying to figure out how big a martian greenhouse would need to be to feed one person or supplement a significant portion of their diet. Question: What is the maximum amount of Calories one cubic ...
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379 views

Solar Flux on Mars Surface

Considering that the Solar Flux on top of Mars' atmosphere is 590 W/m2 (following the 1/r^2 relation for sunlight), how much of this incident light actually arrives to Mars. In other words, what is ...
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Can a symbiosis be sustained between plants and 1 person on Mars?

This question How many plants would be needed to produce oxygen enough for 20 humans? is a good question but does not cover soil nutrients and food source for the people. Is there a set of plants ...
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833 views

Mars transfer window frequency

According to this website I drew up a timeline of Mars transfer windows and the time you'd need to stay on Mars before the next return window: Blue to red arrows are Earth to mars transitions, red ...
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Low energy cements for Mars and Callisto. Waterless cement for the Moon. Any good candidates?

In the non-polar regions of the Moon and Mercury there is a shortage of volatiles, including hydrogen and nitrogen, so they might be regaded as too valuable to be "wasted" to prepare concrete. ...
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116 views

Martian Watershield Greenhouse

Would a greenhouse using a watershield 10 meters in depth be able to receive enough sunlight to grow crops?
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251 views

What are the sanctions to prevent Mars being polluted with human corpses?

Are there international laws or agreements to prevent Mars being polluted with human corpses? If there are, are they underpinned with possible sanction? Isn't it appropriate to make a distinction ...
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170 views

Is Opportunity still in shape to explore the landing site of the Schiaparelli lander?

According to one of the answers to a question concerning Opportunity, the rover has a top speed of 180 meters per hour (no reference). Based on daily performances however a reasonable speed estimate ...
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Part 1 - Wires, fasteners, and other metal hardware - mundane in-situ on Mars

Fasteners - screws, bolts, washers, brackets, conduit, nuts, wire - both coated and uncoated There are many sources of how we will mine the regolith for ores that contain useful quantities of water, ...
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Are not crash landings on Mars violating the Planetary Protection rules?

Are not the chances considerable that the crash landing of the Schiaparelli lander has contaminated the subsurface of Mars with microbes ? For Mars there are 3 categories of Planetary Protection ...
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Martian Names for the Year and Month Time Units

A Martian day unit is called a Sol. A week is supposedly still 7 days/sols. Have there been any (real or fictional) suggestions for new names for other time units like the Martian year? How about ...
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607 views

How can the two MarCO cubesats remain reliably close to InSight during their six month trip to Mars?

According to the NASA JPL web page Mars Cube One (MarCO) Mission Overview and the YouTube video MarCO: First Interplanetary CubeSat Mission linked there, after the Centaur upper stage deploys InSight, ...
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Why is Curiosity remaining on the Vera Rubin Ridge for so long?

Have the MSL mission team members become overwhelmed by the iron-rich rocks on the ridge ? Image from: https://mars.nasa.gov/msl/mission/mars-rover-curiosity-mission-updates/?mu=sol-2018-rock-...
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How many plants would be needed to produce oxygen enough for 20 humans?

Does it depend on the type of plants and how much sunlight they get too?
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What are the geological features for a save place to land in the chaos terrains on Mars? [closed]

Chaos terrains on Mars generally consist of irregular groups of large blocks, some tens of kilometers across and a hundred meters high. The tilted and flat topped blocks form depressions hundreds ...
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What does Specific power [W/kg] of a Solar Array exactly mean?

I am trying to size (weight and surface) a Solar Array for a Mars Base (university project) and the main specification I get is Specific Power [W/kg]. However, I need to relate both weight and surface,...
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How to size Solar Array for Mars Surface

Good morning everyone, I am working on a project for my university where we need to perform a PrePhase A study for a Mars Infrastructure for Propellant production as a means of support for future ...
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Is it feasible to launch NASA's InSight mission Mars using a Falcon 9, instead of an Atlas V rocket?

The Insight mission is launching the spacecraft to Mars on May 5th aboard the Atlas V rocket by ULA. Would it have been possible to launch this mission using a SpaceX Falcon 9 Block 3/4/5 (expendable ...
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What are the louver-like structures on the sides of the Mariner 4 probe?

The COSMOS Magazine article First mission to Mars: Mariner 4’s special place in history July 14, 1965, forever changed the way we see Mars. Tim Wallace looks back at one of NASA’s greatest triumphs ...
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Do you recognize these space artists who made this (possibly) first “paint-by-numbers” image of Mars?

Update! I've just run across the NASA Jet Propulsion Laboratory video Five Ways Mariner 4 Changed Mars Exploration and it mentions this "paint by numbers" representation of "the first digital image of ...
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Are Peace Vallis and it's alluvial fan on Mars classified as special regions or not?

According to the answer for this question, that was not accepted, alluvial fans might have water and thus a IVc category mission would be required to visit such an area. Curiosity meets only the IVa ...
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Why is it so important to visit Columbia Hills in Gusev Crater again?

One of the proposed landing sites for the rover mission Mars 2020 are the Columbia Hills in Gusev Crater, where the Spirit rover landed and has been active there from 2004 to 2010. This was a very ...
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Which medications do you bring to Mars?

In the Apollo missions, any conditions that wouldn't kill in a few days could be treated upon return. In current missions to the ISS, an emergency abort can have medically-threatened crew members back ...
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What are the drawbacks using an intelligent bulldozer on Mars for the assistance of a rover?

Already in 2011 NASA Ames Research Center proposed a Mars mission called Red Dragon that would use a Falcon Heavy. A SpaceX 2015 estimation was 2,000-4,000 kg to the surface of Mars with a soft ...
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203 views

Would a Faraday cage made of gas block radiation?

What is best blocks radiation and is transparent as a gas? Would applying an electrical current through the gas increase the gas from blocking radiation on Mars? Radiation could be blocked by the ...
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167 views

Can air pressure be accumulated this way for a biodome or spacesuit?

Using plastic or rubber or something similar and transparent be inflated with each layer having a increasing pressure lessening the strain on the containing material? When one or two layers fails the ...
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Could ozone be used in a biodome on Mars?

How much ozone would it take to block solar radiation on Mars if chambered in double panned glass or material? Said $O_3$ would break down from the UV. Would applied electricity on $O$ and $O_2$ make $...
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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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Mars Watershield Greenhouse Question

I was reading about Martian greenhouses earlier today and I saw this image: Would this be feasible? Would the water need to be cooled/heated up to prevent things like water condensation from forming ...
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If we were to land on Phobos, what could we gain?

Unique from landing on Mars itself what could we learn from Phobos that we couldn't learn from our own moon or from landing on Mars? Seeing as Phobos orbits Mars faster than the planet itself rotates, ...
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368 views

Who will own Mars? [duplicate]

Elon Musk is currently making plans to to go Mars and set up a permanent colony there. When he gets there and assuming the colony survives - who will own Mars? The thought that governments on earth (...
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Why is Curiosity not heading for Peace Vallis?

For over 5 years Curiosity has been successfully searching for many signs that water was once present at Gale crater. Its geology is notable for containing both clays and sulfate minerals that may ...
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What potential characteristics can be reasonably discussed about a hypothetical Martian microbial ecosystem in lava tubes? [closed]

Based on their hypothetical origin in lava tubes, what characteristics of hypothetical Martian lava tube microbes can we reasonably extrapolate? Could we theorize how different microbe species might ...
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Getting to Mars requires 12 ISSs of mass w/o tech advances?

Does anyone have the original source(s) of the following images? I originally found them here in this Spanish blog (translated to English here via Google Translate). Note the captions that state NASA ...
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Is there any way to tell which NASA rover this “rover” might be modeled after?

In the OK Go! YouTube video linked below, there is a generic model of a planetary rover with a NASA logo on it. It has six wheels, (four on one articulated carriage) a vertical mast with a T-shape on ...
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Is it possible for Curiosity to broadcast live HD television from Mars to Earth?

Current Mars rovers collect large amounts of data and image sequences on Mars and store them in memory, and usually they then transfer the data to a spacecraft in Mars orbit for rebroadcast to Earth ...
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can magnetic field around a magnet be artifically increased for space application?

https://www.sciencealert.com/nasa-wants-to-launch-a-giant-magnetic-shield-to-make-mars-habitable In above article, giant magnetic field is proposed for habitable Mar's and that would only be possible ...
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190 views

What will the US send to Mars as mentioned in this statement to the press?

The video U.S. planning to send 'something beautiful' to Mars, praises Space-X shows a statement made to the press yesterday. I've included a transcription based on the closed captions in the video, ...
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Missions at or soon-to-be at Mars and their DSN “codenames”?

I'm "mining" old DSN data and would like to see all communications with spacecraft around Mars. A quick snapshot in their data shows the following codes. I can guess that ...
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Does variable distance to Mars affect data transmission rates?

There distance between Earth and Mars varies between 50 - 400 million kilometers because of their orbits. Does this affect data transmission noticeably? I'd naively expect you could transmit 8x faster ...
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Have there been any significant improvements to methods of transporting hydrogen to the surface of Mars in the last 10 years?

I have just been reading “Human missions to Mars: enabling technologies for the red planet” by Donald Rapp (Praxis publishing 2008). According to this book one major challenge facing a future manned ...
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Why would InSight's arrival date at Mars be fixed, and independent of the launch date?

Despite the 34 day long launch window, the day that InSight will arrive has already been chosen. See mars.nasa.gov's insight mission timeline below, a site I found linked in this answer. I'm not ...
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What are the details of the SSTO Mars profile for the BFR?

In this link and on other occasions, SpaceX has indicated that the BFR would land on Mars, "top off the tanks" as the article says, and then launch back to Martian orbit. SSTO doesn't work on Earth ...
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What are the physical requirements of an astronaut for a Mars mission likely to be?

I realize that there's a lot of speculation involved here, but current actual mission profiles have PT programs and general wellness specifications. It seems like the qualifications would be a ...
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How much soil can be supported by an inflatable habitat on Mars?

What weight of Martian soil can be supported by the top of an inflatable habitat pressurized at Earth's atmosphere? While habitat's shape is a huge factor, this has 20 meter modules, semi-cylindrical ...
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Will uncovering the ice deposit in Utopia Planitia improve the climate on Mars?

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 ...