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Questions tagged [mars]

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

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Any ideas?: Calculating wet-mass and burn altitude for a Mars landing, using a Python simulation

In this post, I will explain the problem, provide some detailed context, and finally explain what I am searching for (what my question is basically). First of all, this should be quite a fun but ...
AvanD's user avatar
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6 votes
0 answers
86 views

What is the lowest viable circular orbit around Mars that can last at least one week?

Supposing you wanted to launch a spaceship from the surface of Mars into orbit around Mars. It would stay in orbit for up to one week while you prepared a second rocket that would dock with it to ...
user4574's user avatar
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6 votes
2 answers
2k views

Using Mars' inner moon Phobos as a brake

In case of a StarShip (but it could be any other lander), it would arrive a Mars with minimal fuel remaining and it would need to slowdown for reentry, how can it be slowed down for free? Maybe using ...
estinamir's user avatar
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4 votes
3 answers
317 views

How exactly would nuclear thermal or nuclear electric propulsion enable short duration human missions to Mars?

Today (May 1, 2024) NASA Administrator Bill Nelson testified before the House Science, Space, and Technology Committee that nuclear thermal propulsion would enable us to go faster to Mars. He said: ...
phil1008's user avatar
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4 votes
2 answers
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Will a human mission to Mars require artificial gravity?

Elon Musk and SpaceX are planning a manned mission to Mars as early as 2029. The mission timeline is unclear, but one proposal (page 16) from SpaceX, which uses Hohmann transfer orbits for minimum ...
Galerita's user avatar
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4 votes
1 answer
349 views

How feasible is dragging a 1 km asteroid into Mars orbit? (For All Mankind Spoiler Alert)

In the final episode of Season 4, Dev Ayesha, Ed Baldwin and other protagonists hijack the space ship Ranger to drag the wayward Asteroid 2003LC "Goldilocks" into Mars orbit. In terms of the ...
Galerita's user avatar
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1 vote
1 answer
223 views

Could we make space roads? Like a space elevator between planets?

We hear a lot about space elevators that could place something in orbit, but what about a space road between planets? Suppose you had a long tube or flat road placed between Earth and Mars by chemical ...
CuriousMathPerson's user avatar
1 vote
2 answers
449 views

If the Apollo 17 astronauts had gone for Mars, where would they have gotten?

Suppose at the last minute, Houston and the Apollo 17 crew (let's assume that support extends all the way up to the White House) decided they should go for broke and attempt to reach Mars instead. The ...
Shalom's user avatar
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2 votes
0 answers
73 views

What is the best option for providing breathable air to the crew during a first human mission to Mars

While researching Price per kg of cargo delivery to ISS and reading a comment from @DavidHammen, it became apparent that high Technical Readiness Level (TRL) technologies for recycling $\text{CO}_2$ ...
phil1008's user avatar
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11 votes
3 answers
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Ingenuity extended static mission science possibilites

Despite Ingenuity's inability to fly due to missing/damaged rotors, it remains in communication with Perseverance and Earth for now, sending back color images from navigation cameras and such. ...
Dragongeek's user avatar
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11 votes
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An alternative architecture for a mission to Mars

This image, which is supposed to represent the current architecture of the mission to Mars by NASA, raised a wave of emotions. People find it too long and complicated. But is it really possible to ...
Saturn V's user avatar
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3 votes
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What would be the doppler effect in the a 2.42GHz signal coming from a satellite in orbit around Mars, received on Earth ground station?

Say there is a satellite in orbit around Mars, and it sends a signal at such a time that it is more or less behind the Sun. In that case, Mars would be "Occulted" by the Sun. That signal is ...
Astroquest123's user avatar
14 votes
2 answers
1k views

Does the atmospheric pressure of Mars fluctuate because of the seasonal evaporation of the polar ice caps?

The carbon dioxide ice on the Martian poles are known to evaporate every summer and re-deposit every winter. Where does this carbon dioxide 'go' and does it mean there is a seasonal variation in the ...
Duke O's user avatar
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20 votes
1 answer
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Why are the Martian poles not covered by dust?

The Martian surface is known to have periodic 'dust storms'. Depictions of Mars typically show poles with ice at the surface. If that is the case why are the Martian poles not blanketed with a thick ...
Duke O's user avatar
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12 votes
3 answers
5k views

Why does the Curiosity rover camera image resolution have "milliradians" as a unit?

NASA's published specs for the Curiosity rover cameras says that the image resolution is in milliradians per pixel. Which is odd because image resolution is measured in physical size units, i.e. ...
spaceamoeba1010's user avatar
39 votes
4 answers
13k views

Before we build a Mars colony, why don't we build a 100% self-sustainable test colony in the Antarctic?

Before we go to Mars, why don't we build a sealed dome self sustaining colony in the Antarctic? One that can heat itself, recycle all materials, water and waste. Grow enough plants to produce oxygen ...
Bretton Ferguson's user avatar
1 vote
0 answers
133 views

Interpretation of mars rover images

I’ve been obsessed with the perseverance images, specially the images from the SHERLOC-WATSON system- the UV camera tricked out with racing stripes and fuzzy dice hanging from its rear-view mirror (...
Tom Smith's user avatar
17 votes
1 answer
2k views

How high could Ingenuity fly?

On its 59th flight, Ingenuity achieved a height of 20 meters - twice as high as its maximum height during the original 5 flights that it was designed and expected to last for. In the scheduled 61st ...
BaileyA's user avatar
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3 votes
2 answers
192 views

Can I move Hyperion to Mars with fusion rockets?

I'm working on a SciFi story set roughly in 2100 that takes place both on the moon and Mars. One plot point hinges on terraforming Mars, the biggest stumbling block being its lack of water and ...
Hewholooksskyward's user avatar
3 votes
1 answer
256 views

Why not land near the poles of Mars for extracting water? [duplicate]

It is hard to find ancient life on earth that is over 3 billion years old. Rocks get reworked over time. They get melted and metamorphosed, folded and fractured. Fossil evidence is easily lost. So in ...
Chris Landau's user avatar
16 votes
1 answer
3k views

What is this cylinder on the Martian surface at the Viking 2 landing site?

What is the cylinder on the Martian surface in this image taken by the Viking 2 lander? It stands out in most images of the martian surface, including https://en.wikipedia.org/wiki/Viking_2#/media/...
foobarbecue's user avatar
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3 votes
0 answers
109 views

How big does the Martian supply chain need to be, to be self sufficient?

Something I've been pondering recently is how big the manufacturing base needs to be to manufacture everything in the manufacturing base. Big in this case referring to total mass, machines required, ...
Barry Jenakuns's user avatar
3 votes
1 answer
233 views

SpaceX Starship refueling in Mars orbit

I was wondering if the propellant required to leave Earth orbit, accelerate to Mars' orbital velocity and then perform orbital insertion will leave the starship with enough propellant to perform a ...
Scott's user avatar
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16 votes
3 answers
4k views

Is it possible to fly a glider on Mars and if so are there any plans for one?

So I'm a Rising aerospace engineering freshman and have gotten very into the idea of learning about and figuring out possibilities of Martian Aviation. I am well aware of Mars Ingenuity and was ...
Robert Danner's user avatar
3 votes
1 answer
187 views

How can systems of skyhooks help interplanetary travel

I recently watched a kurzgesagt video on skyhooks, and it mentions that a system of skyhook, one on Mars and one on Earth, can shorten a trip to Mars from 7-9 months to 3-5 months. I am confused on ...
Barry Allen 's user avatar
2 votes
1 answer
143 views

Propellant choices for a Mars landing; tradeoffs between LOX/CH4 and H2O2/RP-1?

What are the tradeoffs between LOX/methane and peroxide/kerosene for a Mars landing mission? In which ways are each better or worse than the other? I think the second one would more attractive for ...
Hartsfield's user avatar
6 votes
0 answers
157 views

Glove in Phoenix Backshell?

I stumbled across this image which shows the Phoenix Lander being integrated into its backshell: This is the only image "source" I was able to find: https://picryl.com/media/phoenix-mars-...
RAD6000's user avatar
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8 votes
2 answers
5k views

If we had a video livestream of a clock being sent to Mars, what would we see?

If, you hypothetically started 2 clocks at exactly the same time, and placed one on Earth, and one on a rocket to Mars, and setup a video feed of both clocks, how would they compare as the 2nd clock ...
Elliot Lewis's user avatar
0 votes
0 answers
63 views

If we make a Mars or moon station, how would the carbon and water cycle work if the Earth was destroyed? [duplicate]

If it costs 50k to fly 1 pound to space, how much would the machine cost? I'm a 7th grader and I need help on my project. How would the carbon and water cycle machines work? This is hypothetical.
user avatar
6 votes
0 answers
187 views

Why was the ExoMars Rover to use such as complex parachute system?

American Mars landers use a single, supersonic main parachute. The European/ Russian ExoMars rover was to use a much more complex 4 parachute system consisting of a drogue, a main and a pilot for each ...
Andykins 's user avatar
18 votes
1 answer
3k views

How did NASA avoid a repeat of the Mars Polar Lander failure?

One of the most likely causes of the MPL (Mars Polar Lander) crash landing on Mars was the deployment of the legs being mistaken by the onboard computer as touchdown. Phoenix (and later InSight) ...
Andykins 's user avatar
0 votes
1 answer
877 views

What is a Mars 5-sol orbit? [closed]

I need to calculate the delta-v for descent from 5-sol orbit to the surface of Mars and then ascent back to 5-sol orbit from the surface of Mars. What is a "5-sol orbit?"
Prashant Modak's user avatar
0 votes
0 answers
50 views

When sending a ship to mars what is the optimal travel path [duplicate]

its pretty self explanitory but I need to figure it out but not something from the past a ship that could be sent in the next 5-7 years what would be my time frame using the least amount of fuel and ...
Henry's user avatar
  • 9
3 votes
2 answers
3k views

Google maps for Space exploration

Google Maps Can Google Maps for Space Exploration be defined similar to our planet Earth? I.e Planet Mars exploration, Moon exploration, International Space Station (ISS) journey and other planets of ...
Prashant Akerkar's user avatar
2 votes
1 answer
125 views

Were the distances traversed by Perseverance on Sol 718 and 719 each exactly 415.27 m or were they added together 415.27 m and if so, why?

The image above is an annotated screenshot of a part of the Perseverance location map. On the location map the white line represents the trajectory that Perseverance has traveled in Jezero crater. ...
Cornelis's user avatar
  • 7,535
9 votes
3 answers
676 views

Can Martian regolith be easily melted with microwaves?

Apparently, Lunar regolith will melt if you expose it to moderate power microwave energy. Based on the accepted answer to the referenced question, it has to do with the presence of iron in the ...
codeMonkey's user avatar
  • 1,713
2 votes
1 answer
165 views

Mirror size and pixel resolution on planetary surfaces

MRO’s HiRise camera has a 0.5m primary mirror and a per-pixel resolution of ~30cm from an altitude of 200km. For an identical orbit, and ignoring any atmospheric effects, what mirror size would be ...
Andykins 's user avatar
0 votes
1 answer
212 views

Could Mars be terraformed by redirecting an asteroid to hit it? [closed]

If so, what kind of asteroid would be best?
BrettYeager's user avatar
1 vote
0 answers
89 views

How would low gravity on Mars be a stress factor on plants?

As a 12 year old doing a science project for my local science fair I have found that many experiments that try to simulate how the environment would be like on Mars while growing plants always forget ...
user avatar
2 votes
2 answers
514 views

Lead lined Martian suit

Despite having to transport a significant amount of mass to Mars, would lead lined environment suits be viable, to provide cosmic radiation shielding for Martian colonists? Would carrying that extra ...
Mammoth's user avatar
  • 21
2 votes
1 answer
147 views

Since pure Platinum is found in alluvial deposits on Earth, could it not be detected by Perseverance on or near the fan-delta deposit in Jezero?

Platinum is an extremely rare metal, occurring at a concentration of 0.005 ppm in Earth's crust, but in some alluvial deposits it is often found chemically uncombined as native platinum and as an ...
Cornelis's user avatar
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3 votes
2 answers
215 views

How realistic are the required fluorine mining quantities for terraforming Mars compared to the real mining practices on Earth?

Energy balance calculations in the JGR article Radiative-convective model of warming Mars with artificial greenhouse gases suggest that the addition of 0.2 Pa of the best greenhouse gases mixture (15%...
Cornelis's user avatar
  • 7,535
7 votes
3 answers
375 views

Can we dig for air pressure on Mars?

Digging 8km under the lowest point on Mars will get us Mount Everest conditions for air pressure. I was thinking of two ways of doing said title: Nuclear powered bulldozers working around the clock ...
David Ong's user avatar
14 votes
2 answers
3k views

How would a violin or trumpet degrade over time on Mars?

What would extended periods on Mars do to musical instruments? I'm assuming these instruments would be in habitats similar to ISS or similar, but how might they degrade?
blargtronic's user avatar
2 votes
1 answer
206 views

Why not bring an extra rover with an ExoMars drill unit to Jezero to have a far better chance to get biosignatures for the sample return mission?

In an interview in the recent article Mars Has So Much Radiation, Any Signs of Life Would Be Buried Six Feet Under physicist Alexander Pavlov of NASA's Goddard Space Flight Center tells that he and ...
Cornelis's user avatar
  • 7,535
3 votes
2 answers
261 views

Will Perseverance settle the question of life on Mars?

Here are a couple press conferences that summarize what Perseverance has found so far. Press conference: Ten months of Perseverance: Jezero science News Briefing: NASA's Perseverance Mars Rover ...
mmesser314's user avatar
3 votes
1 answer
132 views

Original Mariner 4 data values

Scott Manley recently did a video where he shows how the first image of Mars from up close was done with pastels while the impatient engineers waited for the image processing department to finish ...
dotancohen's user avatar
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3 votes
1 answer
205 views

Why do two craters in Utopia Planitia look like dark holes and are of the few ones on Mars that look this way?

Screenshot from Mars Trek This enigmatic crater lies in southern Utopia Planitia at 28.72⁰ N, 119.96⁰ E, is about 10 km wide and has a min. height difference between its floor and rim of ca. 1650 m. ...
Cornelis's user avatar
  • 7,535
5 votes
1 answer
184 views

Why use a fetch copter instead of a fetch rover?

Since the success of helicopter Ingenuity, the ESA rover for fetching samples was cancelled in favor of a helicopter. Why was that? What are the advantages.
user avatar
2 votes
3 answers
887 views

How can you warm up Mars?

Mars experience extreme temperatures. Highest temperature being 21 degree celsius. So if we are to terraform mars one day then we first need to warm it up. So any ideas on how to warm up mars?
Joydeep Mohanto's user avatar

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