Questions tagged [mars]

Questions about the science or exploration of the planet Mars.

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How can Elon Musk's Tesla actually reach Mars orbit?

So the payload of the maiden Falcon Heavy flight will be... Elon Musks's Tesla This is one part publicity stunt (it's going to be playing David Bowie's Space Oddity, if for nothing more than the ...
21
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3answers
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Is water on Mars the same as Earth water?

I would like to know how similar Mars water is to Earth water. Can we survive on Mars with Martian water without any major health issues etc?
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1answer
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Could permanent self-sustaining biodomes be built on Mars?

Somewhat apropos of the question of whether Mars could be terraformed (which really seems a non-runner due to lack of molten core) the interesting consideration of biodomes was thrown up. By using ...
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1answer
541 views

Has any government published an official recommendation regarding Mars One?

To my knowledge, most governments throughout the world seem to run institutions that give recommendations regarding safety and wellbeing of their citizens when travelling abroad in one form or another,...
14
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5answers
1k views

Venus vs Mars for colonization

Why is Mars getting so much attention vs Venus, which to me seems like a much more attractive option, in regards to habitability. I've read that the upper atmosphere of Venus has the most Earth-like ...
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Did the Mars rovers actually confirm the gravity of Mars?

For years the theoretical calculated gravity of Mars has proliferated science texts and Internet documentation - but did the rover actually do a test to confirm the theoretical gravity is truly equal ...
16
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1answer
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What are the black and white circular patterns on the Curiosity rover?

On the Mars Curiosity rover, there are black and white circular patterns or marks spaced around the rover, as seen here marked in lime green:     What are these? If I had to guess, ...
15
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1answer
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Does a mission to Venus orbit require less propellant than a similar mission to Mars?

Gravitational attraction is determined using G (m1m2)/r^2 Which indicates the force is inversely proportional to the square of separation of the bodies Of the terrestrial planets Mercury, Venus, ...
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Could we see someone walking on Mars from Earth?

Can any telescope be capable to see some one walking on Mars? How much time dilation would there be? What is the theoretical best resolution?
9
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839 views

What are the synergies between human landing on the Moon and on Mars?

In what main ways would a human return to the Moon facilitate human travel to Mars? It is often argued that the Moon could work as a stepping stone to Mars. I want to know what the merits are of that ...
9
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2answers
497 views

How effective would the ARES aircraft be?

NASA has been working on a glider aircraft they wanted to send to Mars - this is the Aerial Regional-scale Environmental Survey. (ARES) How long would it be able to travel? What would be the possible ...
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Will any Indian in the final crew of the Mars One missions be in violation of Section 309 of the Indian Penal Code?

Last year the Mars One Foundation invited volunteers for a one-way trip to take up residence with the War-Lord. Over 200,000 humans volunteered; amongst them close to 20,000 Indians. A fraction of ...
6
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1answer
278 views

How much land does a colony on Mars need to start off?

Assume that we need just the following Martian resources for our colony: O2 N2 H2O Regolith for radiation shielding Regolith for construction Regolith for printing tools Martian compounds for rocket ...
6
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1answer
697 views

What are the dangers of regolith?

Does regolith mean any threat for people visting the Moon or the Mars? If yes, what is that?
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How big is the risk/potential damage from radiation on a Mars trip?

Elon Musk just announced his concept for traveling to Mars. During the Q&A he commented that the risk of radiation danger to the passengers was low. I seem to remember concerns for the ...
4
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1answer
195 views

How does Curiosity analyse Mars' rocks for finding signs of life?

How does the Curiosity rover analyse Mars' rocks to find signs of life? Is it only based on life-supporting chemicals, or is there more involved? What specific tests are performed? We recall the ...
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2answers
583 views

How to model the martian atmospheric density variations with respect to altitude?

I'm creating a mars re-entry simulation and i need a model for density variation w.r.t. altitude on mars. I know that earth can often be modeled using an exponential density model with a "sea level" ...
41
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1answer
8k views

What was NASA's “Hack” to improve Opportunity's memory in 2015? Did it help?

The transcript of the 2015 NPR podcast NASA Hopes A Hack Will Overcome Mars Rover's Memory Gap says: You know how it goes - you're getting a little older, your memory starts to go, you forget where ...
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4answers
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Would colonising Antarctica be a good test for colonising Mars?

I've seen a lot of documentaries, articles, papers, etc which show people living in the desert or other deserted places to simulate living on Mars. However, it seems to me that a better way to really ...
32
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3answers
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About how long will Curiosity last on its nuclear power?

Curiosity, we know, has no little nuclear reactor, it has a RTG. Great! But how long will it last? For how many years will our little 1-ton friend be roaming around another planet?
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2answers
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Is it real to patch an opening to the vacuum with plastic tarp and duct tape as in Martian?

In the Martian movie Watney patched a broken door to the martian surface with plastic tarp and duct tape. The pressure on Mars is 0.5 kPa, which is 200 times smaller, that on Earth (100 kPa), i.e. it ...
19
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4answers
1k views

What payload was expected for the 2018 Mars Dragon flight (“Red Dragon”)

SpaceX has long been planning to use Dragon capsules to carry objects anywhere in the Solar System. They have officially announced a 2018 launch to Mars. Specifically, the launch window is April-May ...
18
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1answer
764 views

Is there a Martian “North Star”, usable as Earth's North Star?

Mars has a different axial tilt than Earth. It stands to reason that the constellations will remain identical from Mars, but their locations will be somewhat different. On Earth, the North Star is ...
17
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1answer
417 views

Why did the Earth based observations of methane on Mars go wrong?

ScienceNews states that: Scientists had previously identified methane on Mars using Earth-based telescopes and spacecraft orbiting the Red Planet. In 2003, researchers detected a ...
14
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1answer
5k views

Can you take a bath on Mars?

A common picture of someone floating on the Dead Sea or Great Salt Lake, shows how high you float. l If you had that water in a bath tub, I don't think you would sink to the bottom, you would just ...
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2answers
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What technological barriers, if any, prevent a manned mission to Mars at this time?

Is the technology currently in place to launch a manned mission to Mars (and is it thus just a resource constraint that's preventing such a mission from occurring), or are there still other ...
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Is a magnetic field really needed to terraform Mars?

I see so many discussions about how the main roadblock to terraforming Mars is its lack of a magnetic field. If Mars had an atmosphere as thick as Earth's but no magnetic field, wouldn't it still take ...
12
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2answers
632 views

What existing life on Earth is best suited for the Martian environment?

What existing life on Earth is best suited for the Martian environment? By best suited, I mean it could theoretically be placed on Mars and easily adapt or thrive within the existing environment the ...
11
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1answer
253 views

Are there microclimates with better weather conditions on Mars?

On Earth, a microclimate mostly refers to an area which differs from the surrounding areas in temperature or humidity. And what about Mars ? Are there places with atmospheric conditions that are ...
10
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3answers
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Does Mars contain materials that could be used to build a space colony?

If a manned mission to mars was made with the hope of colonization, we would probably need to make many of our structures there out of materials found there - they would probably be simply too heavy ...
9
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1answer
1k views

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 ...
9
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1answer
331 views

Any explanation for morphology of within crater formations on the northern Nili Patera caldera of the Syrtis Major volcanic plain of Mars?

The Nili Patera region has enjoyed fairly good media exposure recently, ever since high detail HiRISE (High Resolution Imaging Science Experiment) photographs hit the Internet, showing fabulous sand ...
9
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2answers
329 views

Is it possible to deploy “geostationary” Mars orbiter?

Hypothetical question: Are we able launch an orbiter from Earth to Mars in a way that such orbiter ends on "geostationary" position, hovering always one specific place over Mars? My thought process ...
9
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1answer
407 views

Did Curiosity rover communicate to the ground station during its descent phase?

During descent phase and entering Mars' atmosphere, was the rover's descent controlled by the Earth based ground station, or by the rover itself? What are the technical challenges, when communicating ...
9
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3answers
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Will there be live HD television from Mars with the Mars 2020 mission?

Is it known if live HD television from Mars would be possible with the Mars 2020 rover mission and if an extra channel would be possible just for relaying HD TV to make live broadcasts possible ? ...
8
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1answer
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Current maximum bandwidth between Mars and Earth?

What is the current maximum bandwidth between Mars and Earth (at their closest), accounting for any satellite/prober/orbiter that is either at Mars or already launched and en route? So far I've found ...
8
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1answer
201 views

Number of burns for optimal launch ascent

If we consider Mars, with its relatively low gravitational acceleration and low density atmosphere, I had always assumed that if we have a single-stage-to-orbit launch vehicle on the surface of Mars ...
8
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1answer
436 views

Which computer monitors will work on Mars?

In The Martian by Andy Weir, the main character Mark Watney takes a laptop out of the habitation module to take notes. But when he comes out, he discovers that the LCD monitor is broken, because the ...
7
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5answers
611 views

Would a smaller re-entry vehicle better handle very high re-entry speeds?

"Inspiration Mars" has the idea to use a free return trajectory for a crew of two rounding Mars. While attractive in some ways, this free return trajectory has the disadvantage of ending up with a ...
7
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1answer
1k views

How will the SpaceX ITS return from Mars?

SpaceX's Interplanetary Transport System has a well-defined plan for getting to Mars: Launch the ITS spaceship into LEO Launch five ITS tankers to fill the spaceship's tanks. Launch the spaceship on ...
6
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1answer
334 views

Where will NASA's InSight land on Mars?

Next year NASA is launching its InSight lander to Mars to study the rock deep below the surface, so they can try to understand how the planet formed. Where on the Martian surface will InSight land, ...
6
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1answer
243 views

Apparent temperature Mars

Apparent temperature is the temperature equivalent perceived by humans, caused by the combined effects of air temperature, relative humidity and wind speed. There are several ways of measuring it, ...
6
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5answers
816 views

Could the ISS be propelled to Mars?

As the ISS has shown the ability for human habitation for extended periods, might we be able to add a propulsion unit to the ISS that would be capable of providing delta-v to send ISS to a martian ...
4
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4answers
660 views

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 ...
4
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2answers
152 views

Which specifications should a tablet computer have in order to work in outer space?

I was also intrigued by the same problem posed on Which computer monitors will work on Mars? I would like to take it further to work out which specs (and technologies) should a tablet computer have in ...
3
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2answers
360 views

Is vibration useful in shaking off Mars dust?

I had just read this article about how they were trying to figure out how to make a vibrating superconductor move in 1 direction, for propulsion, but it didn't sound too promising. So I thought of ...
3
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2answers
6k views

Delta-V to Low Mars Orbit

I'm making a Mars probe in Kerbal Space Program Real Solar System, and I have 13 km/s of Delta-V in the lifter itself. I have a cryogenic second stage with a KVD-1 engine, it has 7.36 km/s of Delta-V, ...
3
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2answers
683 views

Why was MarCO-B CubeSats flying away after InSight landed?

Farewell to Mars November 26, 2018 MarCO-B, one of the experimental Mars Cube One (MarCO) CubeSats, took this image of Mars from about 4,700 miles (6,000 kilometers) away during its flyby of ...
2
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1answer
179 views

Current state of the art Mars spacesuit?

What's the current state of the art spacesuit for use on Mars? I'm wondering about things like size, shape, materials, layering, performance, weight and comfort. In particular, how thin can the main ...
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4answers
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Where can the term “Sol” used?

Alright, I know that "Sol" is used on Mars to count days. But is the sun called: "Sol"? And can you use that term on Earth as well? The reason for the question is that the term "sol" is used in two ...