Questions tagged [mars]

Questions about the science or exploration of the planet Mars.

79 questions with no upvoted or accepted answers
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98 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 ...
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91 views

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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176 views

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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Mars drill depth to discover Life

Curiosity has shown that Mars used to have persistent liquid water on the surface. (~3+ billion years ago.) IF life was around at that time, at what depth would we expect to find it? Without plate ...
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Rationale for human presence on Mars in the Apollo era

The Apollo program was motivated by politics; no matter that the Apollo program was conceived before Kennedy's speech, the commitment to make it happen was driven by the need to demonstrate an ...
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100 views

Practical ice deposits on Mars?

Per JPL, Recent observations have discovered a resevoir of ice beneath the surface of mars. How practical, from an ISRU perspective, is this discovery? Frozen beneath a region of cracked and ...
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132 views

What was the best late Nova rocket design among the request for proposals NASA received?

According to Wikipedia (https://en.wikipedia.org/wiki/Nova_%28rocket%29) the late Nova rocket was a "larger version" of the Saturn 5, meant to send manned missions to Mars. Some requests for proposals ...
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170 views

Is each instrument on ISRO MOM independently in 24x7 contact with Earth?

The ISRO Mars Orbiter Mission web-site writes to say Mars Orbiter Mission carries five scientific payloads to observe Martian surface, atmosphere and exosphere extending up to 80,000 km for a ...
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239 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. ...
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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 ...
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136 views

Speed needed for the ship to escape Mars, on The Martian movie

Based on the two speeds and altitudes that are presented in the movie: "The Martian" which are respectively 741 m / s and 1350m, 850 m / s and 1843 m I would like to prove with calculations whether or ...
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Why the big difference between NASA and ESA/Roscosmos in evaluating the Oxia Planum landing site?

In november 2018 ESA announced that the Oxia Planum region is favoured for the ExoMars surface mission. The figure above from this answer about the 21 potential landing sites for the Mars 2020 ...
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140 views

How large are the advantages to building a Martian spaceport on Olympus Mons? What are the disadvantages?

There are several questions and answers here about a potential advantage to launching from substantially higher altitudes, usually the answers are that while indeed there is some advantage, it is ...
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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 ...
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38 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 ...
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76 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 ...
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232 views

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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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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121 views

Would the EMP from atmospheric polar nuclear detonations on Mars felt by orbiting spacecraft be larger or smaller than (if it were) on Earth?

Gizmodo's Watch Elon Musk Describe Terraforming Mars to Stephen Colbert links to the video (shown below). Their second article Elon Musk Clarifies His Plan to "Nuke Mars" quotes Musk from a SolarCity ...
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216 views

Ammonia synthesis on Mars — has there been any discussion or research?

Ammonia can be used in the production of fertilizer, as a source for nitrogen in soil for plants, in this case for food. Synthesis of ammonia from nitrogen can be done with the help of bacteria using ...
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129 views

Was the telltale on the Mars Phoenix Lander used for meteorology? Why not a hot wire anemometer instead?

Reading about ping pong ball anemometers I discovered that the Mars Phoenix Lander had an anemometer of this design, and there are images and GIFs of it moving. When imaged from one or two different ...
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27 views

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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41 views

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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142 views

Is there any reason other than lack of oxygen Tardigrades can't survive Mars?

If Cyanobacteria or Lichens can survive on Mars could other small organisms like the Tardigrade then survive & flourish among them? Due to the thicker atmosphere to be found the bottom of the ...
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84 views

Can Mars provide vitamins?

How long can nutrients found in Mars along with an algae diet sustain human life?
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119 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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78 views

How to determine an available planetary communication window using orbital mechanics?

For class I have an orbit around Mars at an inclination of 63.4 deg and a base site of 55 deg North and was wondering how to work out the communication window, using orbital mechanics. Orbital ...
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47 views

Can cirrus clouds be created on Mars?

On Earth we are thinking about reducing the cirrus clouds to cool off the planet Earth, but can cirrus clouds be created to add to Mars' atmosphere and keep the heat from escaping into space?
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'Space Transit Habitat' source(s) of energy

What are the sources of energy for a Space Transit Habitat(manned) in terms of both propulsion( after passing over the Low Earth Orbit) and required electric facilities)through a 6-8 month voyage to ...