Questions tagged [mars]

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

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11
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1answer
1k views

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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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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1answer
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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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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": ...
4
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1answer
161 views

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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1answer
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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 ...
9
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1answer
786 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 ...
3
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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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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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1answer
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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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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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“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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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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1answer
135 views

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 ...
4
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1answer
135 views

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 ...
3
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1answer
172 views

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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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 ...
3
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1answer
141 views

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 ...
0
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1answer
159 views

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 ...
13
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1answer
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The Chinese Mars rover and lander can be seen in the same picture. What device took the photo?

The China Space News Agency published an image showing the Chinese Mars rover and lander in the same photograph. What camera took the picture? Source: CNSA
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Which is currently further from their landing site: Ingenuity or Perseverance? How far away are they from each now?

Ingenuity has flown seven times now and I'm not certain but I think for at least one of the flights it traveled some distance and landed in a new site. Perseverance has done some traveling as well. ...
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5answers
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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 ...
6
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1answer
224 views

What are these Martian space-whale (or seagull) shaped features?

In this recently released image of CNSA's ZhuRong lander and rover China releases new Mars image taken by Tianwen-1 probe, CCTV (English) Article there are many white features scattered over the ...
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2answers
95 views

What type of battery technology does Mars Odyssey use?

The Mars Odyssey orbiter is currently the longest-serving spacecraft at Mars. Launched and put into service in 2001, it continues to take infrared pictures and gamma-ray spectra of the Martian ...
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3answers
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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 ...
4
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1answer
170 views

What's the exact location (lat/lon) of Zhurong?

Thus far, CSNA has announced the landing location as 109.7 E, 25.1 N. On Mars, 0.1 degree is about five km. Most Mars landers/rovers have been found in orbital imagery, and their lat/lon measured ...
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2answers
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Is this white stuff seen by the Mars Phoenix Lander water or carbon dioxide ice?

Source Here is an image which shows ice is evaporating over time. They use the word "ice". 1st: I'm not sure what they are talking about. Are they talking about the white stuff (like milk) ...
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2answers
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How much UV radiation will Mars inhabitants receive?

I have a new weather station for my home, and it included a UV radiation monitor. But I then thought, “What’s the UV radiation levels on Mars? How much higher is it than Earth?” I tried searching the ...
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0answers
67 views

Did they figure out what caused the “high-pitched scratching noise” that Perseverance recorded with its microphone? Was it static discharge?

In NASA's SoundCloud account there is Sounds of Perseverance Mars Rover Driving – Sol 16 (16 minutes) (for example between 01:30 and ...
8
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1answer
583 views

Are quasicrystals common on the Moon and Mars?

According to this 594, 7861 Nature article called First nuclear detonation created ‘impossible’ quasicrystals, the quasicrystals are readily created when where is an explosion or a meteorite impact ...
6
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1answer
202 views

How long would a magnetic shield placed at the Mars L1 point take to replenish Mars's atmosphere?

This conference paper proposes placing a magnetic shield at the Mars L1 point to protect it's atmosphere. The paper reports the results of modeling the martian atmosphere at a variety of pressures (10,...
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Is there any official Chinese website where we can follow the actions of the Zhurong rover?

Zhurong, China's first Mars rover, soft landed on Utopia Planitia on May 14, 2021. Coordinates of the landing site are: 25.1⁰ N 109.7⁰ E The planned operational lifetime is only 90 sols. (Why should ...
3
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1answer
82 views

In their first 100 sols which NASA Mars rover drove the furthest and which one the least?

It seems we've passed the 100 day/sol mark for Perseverance. Perseverance and Curiosity are comparable in designs but have had significantly different short term goals; Curiosity was the first of it's ...
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1answer
194 views

On what calculations is Robert Zubrin's assertion that Mars could be warmed by 10 ⁰ C in 50 years with fluorocarbon gases based?

In this answer to the question "What would the full hypothetical Mars terraforming roadmap look like ?" there's a link to the article "Zubrin on Terraforming Mars" in Universe ...
2
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1answer
120 views

What expansion ratio is the best for mars surface level engines?

What expansion ratio is the best for mars surface level engines? For launches from Earth, first stage nozzles are much shorter than second stage nozzles because of Earth's high sea-level pressure. For ...
7
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0answers
94 views

Is the charge on Martian dust positive or negative?

Martian dust tends to cling to surfaces such as solar panels due to electrostatic charge. Martian dust is extremely small and fine-grained. Atmospheric dust on Mars is approximately three microns in ...
3
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1answer
76 views

Plot of the thermally-induced tilt in Martian surface during solar eclipse by Phobos? (slope of 1 atom per meter?)

Space.com's Mars lander InSight picks up tiny ground tilt caused by Phobos moon transit says that both Insight's ultra-sensitive seismometer picked up a very tiny transient shift in attitude during a ...
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30 views

Articulable/tilt-able solar panels planned for, or already tried on Mars or the Moon to get rid of deadly dust accumulation on solar panels?

From Forbes.com's Mars Opportunity And Spirit Rovers Could Have Lived Practically Forever With One Tiny Change: One option would be to install some mechanism such as wiper blades to remove any ...
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0answers
40 views

Have any Mars surface spacecraft had downward-pointing radiometers to measure the surface temperature? (not air temperature)

NASA's Insight; Weather gives us regular weather updates from Insight's location on Mars, an example is shown below. Temperature is of the air around the lander. Question: But does or has Insight or ...
2
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1answer
183 views

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 ...
2
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1answer
105 views

Is the sky of Mars black (except its lower side toward the horizon)?

The site of CNSA has not yet posted color pictures showing the sky of Mars so we can not know for sure the color of its lower side (that part close to the ground as looking toward the horizon). ...
20
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3answers
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Why does the sky of Mars appear blue in this video of pictures sent back by the Chinese rover?

Is there any explanation for the blue sky of Mars shown in this video of photos transmitted by the Chinese rover? Zhurong Rover is driving on Mars sending back new images (Chinese Tianwen-1 mission) -...
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2answers
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What are these details on (renderings of) the Zhurong rover's wheels?

Looking at some renderings of the CNSA Zhurong rover I noticed some curious (pun intended) details on the wheels: This Newsy Today article: In this The Conversation article: seen in some clips of ...
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3answers
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Why do the Mars pictures sent by Viking 2 and the Chinese Lander show quite different landscapes of the same Utopia Planitia? [duplicate]

The photos transmitted by the Viking 2 lander and those taken by the Chinese rover show quite different landscapes. They do not corroborate each other, also they should look similar, as long as they ...
10
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6answers
361 views

Economic Incentives of a Mars Colony

The design of a mars base is obviously a very difficult task that will likely take contribution from many different groups. However, while a lunar base has incentives such as mining of Helium-3, does ...
51
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3answers
6k views

What caused all the dust on Mars?

The surface of Mars has vast quantities of dust. It is everywhere. Even hard rocky areas are covered with dust. I am aware of the mechanisms for dust formation, including wind velocity abrading rocks,...
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3answers
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Did the FAA license the Ingenuity helicopter to fly on Mars?

This answer to Why is Rocketlab working with a Federal Aviation Administration to investigate an early 2nd stage engine shutdown? says The Federal Aviation Administration is the United States' ...
11
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2answers
693 views

Is there independent evidence that China landed a robot on Mars in May 2021?

I would like to know if there is independent evidence of any kind that China landed a robot on Mars in May 2021? As of May 16, 2021, the last news on CNSA (China National Space Administration) site is ...
3
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3answers
181 views

Why allow communication with interplanetary spacecraft to be silent for stretches of time; only getting updates on certain days & times of the week?

Communication between planetary bodies in space, e.g. from the moon, or Mars, takes a long time and has many shortcomings, like line of sight requirements. Communication with interplanetary spacecraft ...
4
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1answer
125 views

How would Ingenuity handle Martian Storm and dust devils?

Martian storms are quite common and can sometimes encompass most of the planet. Though the density of the Martian air is low, the speeds are pretty high (some have observed 26 m/s). How would the ...

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