Questions tagged [mars]

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

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227 views

How to calculate the local maximum solar radiation on Mars from day to day throughout a full martian year?

I would like to know where on Mars the least lowest daily temperatures depending on the time of year will be. At first glance one might think, as I did, that it has to be along its equator, but ...
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what range of orbital inclinations will be needed to reach Mars from the Boca Chica launch site?

When SpaceX fly missions out of Boca Chica in South Texas to Mars what orbital inclination will the launch need to be to put the spacecraft on to best transfer orbit to Mars? And will this vary with ...
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Will we all be in voluntary ketosis on Mars?

The EurekAlert! NASA mission tests ketogenic diet undersea, simulating life on Mars University of South Florida researcher will be in nutritional ketosis during NEEMO 22 mission packs a lot of ...
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Have lunar (or martian) rovers exploited shadows, perhaps for terrain comprehension or obstacle avoidance?

This answer proposes that light bars would be better than a single headlight for night time navigation on the Moon because a single headlight will generate hard shadows. Considering this is exactly ...
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How do they know the sub-surface radar reflections (potential underground ice or 'lakes') on Mars are not natural dielectric or metallic in origin?

Gizmodo's NASA Scientists Find More Subsurface Lakes on Mars links to Characteristics of the Basal Interface of the Martian South Polar Layered Deposits (paywalled, but there is this 52nd Lunar and ...
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Is there dirt or its structural equivalent on Mars?

One potential solution to an initial permanent colony on Mars would be a series of modules with dirt floors and walls and slightly convex, transparent roofs. Assuming the interior temperature was ...
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480 views

What harm could perchlorate consuming bacteria do to potential native life forms on Mars?

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 ...
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666 views

What precautions are planned to prevent samples returned from Mars crashing and releasing organisms on Earth?

Bias disclaimer: I think that returning samples from Mars to Earth at a point in time where we also suspect there is a chance that there is microbial life on Mars is ill-advised and arrogant. We are ...
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What are the challenges in terraforming a portion of Mars as opposed to the entire planet?

To be clear, I'm not talking about creating human-livable conditions, just the minimum required to support microbial life and possibly begin the process of creating an environment to support more ...
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If Elon Musk wanted to bring back some Martian soil, would US permission be required?

A scenario occurred to me recently where the Chinese space program decided to go all-in on Mars sample return, and their schedule was such that it would happen before the NASA/ESA mission was ...
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Martian dust getting into habitats

Martian dust could cause lung disease including cancer. Space suits and boots would become contaminated and bring the dust into the habitats. How would human missions to Mars mitigate this issue?
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Why shadows of the blades on Ingenuity navcam photos looks brighter than shadows of the legs?

Consider this photo from the Ingenuity navcam on the first (?) flight: You can see that the shadows of the blades seem brighter than the shadows of the legs. It's especially noticeable when they ...
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Why (the heck) did Tianwan-1 insert into a low inclination orbit then execute a plane change from 11.8 to 86.9 degrees?

eoPortal's Tianwen-1 (China's first Mars Exploration Mission) shows the following graphic, caption and link. It's often discussed that orbital plane changes are like certain table wines in that they ...
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Why is it so cold in the nighttime (-130 C at 25.1 degree North) at the location where the Chinese rover landed on Mars?

Jia Yang, a Chinese engineer, announced that the Zhurong rover rolled cautiously, about 10 m in 3 days. One reason for this slow progress is the temperature that drops to -130 C and freezes the carbon ...
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What new has come from the recent methane findings on Mars?

I was reading: https://www.cnet.com/news/nasas-curiosity-rover-makes-surprising-methane-gas-discovery-on-mars/ And, yes, I realize that cnet is not a good source of information, however it's more ...
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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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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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Which parameters to use with FFMPEG to rectify Mars Ingenuity helicopter images? [closed]

I know how to convert a fisheye image to equirectangular, to view it inside a 3D VR viewer as a "panorama": ...
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1answer
327 views

How would this two-stage Mars Ascent Vehicle work? Where do you sit?

This curious answer shows an image of a liquid-fueled Mars Ascent Vehicle with a sign in front that only says Two Stage Mars Ascent Vehicle Question: Is there some NASA program associated with it so ...
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Manufacturing rope, textile, and clothing on Mars

I'm wondering what the most space and mass efficient system is to construct woven products such as rope, textiles, or clothing on Mars. Current textile production strategies often rely on methods ...
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How large could manmade, domeshaped caves inside the ice dome in Korolev crater on Mars become without the danger of collapsing?

Would not the right exploitation of the ice dome in Korolev crater be the most economical way to create Earthlike room for living on Mars, if they were safe to use? With "Earthlike" I mean ...
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What would be the trajectory and initial speed of a chunk launched from Phobos to get as close as possible to any pole of Mars?

Credit: NASA / JPL-Caltech / University of Arizona Phobos has a nearly circular orbit almost parallel with the equator of Mars. It orbits the planet in only 7h.39 min. at a height of 6000 km above the ...
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Harvesting Venus atmosphere to Terraform Mars

Since Mars has such a thin atmosphere, to Terraform we would need massive amounts of Nitrogen. Would it make sense to import it from Venus? Also since venus's atmosphere is mostly co2, and we can make ...
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Mars versus the poles of Mercury WRT colonization

From MESSENGER Finds New Evidence for Water Ice at Mercury's Poles : Credits: NASA/John Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington/National Astronomy and ...
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How much gravity is actually needed to avoid serious health consequences?

Most discussion I have read about using tethers and rotation in order to simulate gravity on spacecraft, talk about simulating Earth's gravity - 1g or 9.8 m/s2. Baked into the 1g figure is the ...
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Scientific value and feasibility of a local Martian weather experiment by uncovering the near surface ice in Nier crater?

From NASA's Treasure Map for Water Ice on Mars: "You wouldn't need a backhoe to dig up this ice. You could use a shovel," said the paper's lead author, Sylvain Piqueux of NASA's Jet ...
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Is Quantum Entanglement technology possible for interplanetary communication in future to achieve low real-time latency?

There is a small debate over the comment session in NASA Lands InSight on Mars video uploaded by JPL. The 1 minute and a half video is about the essential part of InSight's EDL event cropped out from ...
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Will suits worn on Mars lose kilograms of “expendable water” each time they are used?

In this excellent answer to How have space suits dissipated the heat removed from astronauts? I learned that space suits from the Apollo missions and even when used in space walks from the ISS today ...
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Viking 1 - Cydonia Face on Mars Photograph Multitudinal Black Dots

The "Face on Mars" photograph taken by Viking 1 in 1976 of the Cydonia region on Mars has multitudinal similar sized small dots in a seemingly random pattern all over it. Are all those dots ...
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790 views

Self-sustainable Hermetically Sealed System: Humans & Plants

Somewhat related to How many plants would be needed to produce oxygen enough for 20 humans? Suppose a number of humans are closed in a large hermetically sealed room on Earth with a glass (or other ...
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Manned helicopter on Mars

To operate a helicopter on Mars capable of carrying people, how big would the rotor blades have to be compared to a helicopter on Earth? This question has been reasked at https://aviation....
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Did the Human Mission to Inner Space (HUMIS) experiment ever take place?

The final report of the 2003 Caves of Mars Project, formally ''Human Utilization Of Subsurface Extraterrestrial Environments'' (PDF), talks a lot about the "Human Mission to Inner Space" (...
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What would the human gait look like on Mars?

Is there an approximation of what a human would look like walking on Mars? Would it be closer to how the astronauts walked on the Moon or the way we walk on the Earth? With the gravitational ...
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Removing perchlorate from Mars surface soil

It's known that there's a lot of perchlorate contained in Mars' surface soil. But could we take the toxic part out and make it become plantable? If so, how might this be done in a practical way on ...
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Could the Electron launch a cubesat to Mars

Could the Electron in combination with it's kickstage deliver any meaningful mass to Mars, ie; a 2kg cubesat or is it unable to reach the required velocities even with no payload. Rocketlab are ...
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“Why don't they use the little helicopter to fly just above the rover's solar panels and blow the dust off?” [duplicate]

The Mars Rover solar panels are covered in dust and can't generate enough power. It is going to kill the mission. There isn't enough wind in the location where its at to blow the dust off. Why not use ...
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Will there be a command moratorium for Mars spacecraft again in 2021?

About every two years, Earth and Mars are on opposite sides of the Sun (a Mars-solar conjunction). Plasma expelled from the Sun can interfere with radio transmissions between Mars spacecraft and the ...
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What CPU does China's Zhurong rover use?

The Curiosity and Perseverance rovers, and the InSight lander, all use the BAE RAD750 processor. The Ingenuity helicopter uses a Qualcomm Snapdragon 801 processor. The only other active spacecraft on ...
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Can Mars orbiters be disposed in the atmosphere, as it is done on Earth?

There are a fair number of spacecraft currently orbiting Mars, and each will eventually reach the end of its useful life. Satellites in low Earth orbit are routinely de-orbited at the end of their ...
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262 views

Comet at Mars L1

If we placed and maintained a comet at Mars L1 point would we get a coma and tail that would add volatiles to the Martian atmosphere? I've also read comets create a bow shock with the solar wind, ...
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Are there any greater risks of traveling significantly faster to another planet?

Earlier I had thought that space ships can strike against space rocks while traveling to another planet. But I've read that space is vastly empty, it's highly unlikely that something will come in the ...
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Has there ever been an attempt or serious consideration for spacecraft to land on Mars without an ablative-type heat shield?

My answer to Do exploration spacecraft enter Mars atmosphere against Mars rotation, or on the same direction? lauds the use of ablative heat shields for minimizing radiative heating of a spacecraft by ...
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Would Earth fireworks work on the Moon or on Mars?

Fireworks have had a very long history and have evolved into highly engineered devices with simultaneously excellent performance and reliability. Even small tweaks require research, testing, and are ...
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For a crew-mission, in case of impromptu changes, what would be the most suitable depot locations for a re-supply?

Following the question on re-fuelling en-route to Mars, I am interested in exploring a mission architecture in which a crew may be offered different options for impromptu mission changes, for example ...
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How much more likely is it for a colony on Mars to receive a damaging meteorite hit than a similar structure on Earth?

Meteorite damage probability is low both on Mars and Earth, but Earth has a thick atmosphere, which Mars does not. The thinner atmosphere on Mars should yield some increase of impact probability. Is ...
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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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Methane internal combustion engines for rovers on Mars and Moon. Feasibility?

It seems possible to produce methane and oxygen from the atmospheric CO2 and icy soil on Mars, and from icy regolith in the polar craters of the Moon. It has been suggested that CH4+O2 could be used ...
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How deep a valley or trench would be needed on Mars to provide the same atmospheric pressure as 6 km above sea level on Earth?

Atmospheric pressure increases the deeper you go & the highest growing plants on Earth have been found at a height of 6 km so how deep a trench would we need on Mars to provide similar air ...
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Refueling a Mars mission on the way

Inspired by another question asking why we can't use faster rockets to Mars I came up with a naive question of my own ;-). The answer to the first question is that the pesky rocket equation makes ...
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What independent evidence is there that the Zhurong rover landed on Mars in May 2021? [duplicate]

The China National Space Administration announced, on the 17th of May 2021, that the Tianwen 1 mission landed the Zhurong rover on Mars, with the landing taking place on the 15th of May 2021. What ...

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