Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [mars]

Questions about the science or exploration of the planet Mars.

4
votes
1answer
207 views

How does one get Context Camera (CTX) images from Mars with certain identification numbers?

According to Wikipedia the Context Camera(CTX) on board of the Mars Reconnaissance Orbiter had already mapped 50% of Mars by Februari 2010. Should it not have to be possible to get access to all these ...
4
votes
1answer
543 views

Transparent radiation shielding for martian surface bases

One idea that's often floated when discussing ways of constructing martian habitats is that of "doming" over small craters or valleys and pressurizing the whole area. This would have several ...
4
votes
2answers
331 views

Is secure communication in space important?

How important is secure communication in space? Science-related research is often made public, but does that mean all communications must be unprotected?
4
votes
2answers
535 views

Solar Flux on Mars Surface

Considering that the Solar Flux on top of Mars' atmosphere is 590 W/m2 (following the 1/r^2 relation for sunlight), how much of this incident light actually arrives to Mars. In other words, what is ...
4
votes
2answers
590 views

Is SSTO viable on Mars?

I know that Single-Stage-to-Orbit is quite challenging from the surface of Earth, but it's relatively straightforward from the moon (as demonstrated by the Apollo LM). What about Mars? Let's assume in-...
4
votes
1answer
299 views

Could a sling launcher be used on Mars?

A sling launcher (discussed in this write-up by Landis) is a tower with a motor that spins a hub with two or more cables attached. Payload(s) are attached to the end of one or more cables and ...
4
votes
3answers
221 views

Calculating low-thrust capture delta-V with high $V_{inf}$

I'm designing a CubeSat mission to the Martian moons, and am having trouble calculating capture delta-V. Once it gets into a circular orbit, I can do the rest, but the capture itself is giving me ...
3
votes
2answers
388 views

How to use this Google Mars viewer to find this Martian landslide event?

This NASA/University of Arizona HiRise tweet shows this interesting image of a meteor impact crater that triggered a landslide (or maybe a "dust-slide") on Mars. The tweet links to this University of ...
3
votes
2answers
1k views

How can aerobraking be used to enter high orbit without landing?

It has been proposed that a human mission to Mars could park the transfer habitat in high Martian orbit while only a small capsule lands on the surface or on a moon. This in order to minimize the mass ...
3
votes
1answer
122 views

What is the Austrian Space Forum doing in Oman?

I was looking through CNN's clickbait photo compilation Instant vacation: The world's best travel photos of 2018 and came upon the following image and caption. What is the Austrian Space Forum, and ...
3
votes
1answer
69 views

Puzzler: help understanding these amazing Curiosity eclipse GIFs

Starting from Curiosity Observes Sunset Eclipse: Sol 2358 I found three images in the sequence PIA23133, PIA23134, and PIA23135 which I thought would mean (but don't know for sure) that they are ...
3
votes
2answers
251 views

Could a fat rocket be used on Mars?

Since Mars' atmosphere is around 2% the density of Earth's then could a much wider rocket achieve orbit? Could the rocket be in the shape of a capsule or an optimal shape for reentry on Earth?
3
votes
2answers
572 views

Bombing Moon and Mars: What would it look like?

To me it seems surprising, frightening, and sadly typical that before humans set foot on a celestial body, they plan to nuke it (1, 2, 3). What would a big explosion on Moon or Mars look like? I ...
3
votes
1answer
188 views

Can HiRISE photograph Starman?

On Oct 7, 2020, according to the latest predictions, the Tesla Roadster/ Starman will pass within 0.05 AU (7.4 million km). Could HiRISE image it with any success, and as anything but a dot?
3
votes
2answers
144 views

How much of an issue is space junk going to be for future manned mars missions?

As far as I understand, a manned mission to mars would require an unprecedented amount of equipment, most of which would have to be pre-staged in LEO. How is space junk going to affect this? The ISS ...
3
votes
0answers
143 views

What's the deepest a trench could theoretically be dug on Mars?

Given the physical characteristics of Mars (the crusts thickness, it's composition, gravity, etc) how deep a trench (that could be expected to continue to exist indefinitely, or rather, for periods of ...
3
votes
0answers
582 views

Artificial magnetic shielding for Mars feasible?

According to this article, the Martian atmosphere can be saved from being dispersed into space through an artificial magnetic shield. I'm interested in knowing the costs and mechanics that can make ...
3
votes
6answers
447 views

What would be a few challenges to build a landing strip on mars?

So we are spending a lot of money to get things landed vertically. Its a challenge, and obviously tough too. So here is the idea. Get to mars. land over there, no need to return to earth (if no ...
3
votes
1answer
5k views

Can we restart Mars's magnetic field? [duplicate]

Could Mars's magnetic field be restarted by its own moon? I've done some research (and I am definitely no scientist) but I am looking for answers. I know that Mars has two moons, one of which is on a ...
3
votes
2answers
199 views

Is it possible for entomopter to fly on Mars carrying payload of 1-2kg?

In other words, how big should an entomopter be so that it could fly in Mars' atmosphere and carry a payload of 1-2 kg? I'm trying to find out if an entomopter could be used to carry a spectral sensor ...
3
votes
1answer
856 views

Mars' atmosphere and the triple point of water

As I understand it, the average atmospheric pressure at the surface of Mars is close to the triple point of water. Is this a coincidence or does water have some sort of controlling effect on Mars' ...
2
votes
1answer
353 views

What is the terminal velocity on Mars?

How would I calculate the terminal velocity of Mars? What is the terminal velocity of a balloon entering Mars' atmosphere? Would a balloon pop if dropped from space?
2
votes
1answer
371 views

Is the entire underside of Schiaparelli one big crushable-structure?

The caption in this Space dot com video says that Schiaparelli will drop the last two meters, and the shock will be absorbed by a crushable structure. It is described in the text accompanying this ...
2
votes
1answer
154 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 ...
2
votes
2answers
127 views

Could electricty be generated from a Martian dust storm?

This helicopter is producing static electricity from the blades moving through the dusty air. Along with the electricity provided by wind generators could additional power be created this way from ...
2
votes
0answers
167 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 ...
2
votes
1answer
101 views

What were the 21 potential landing sites for the Mars 2020 mission?

In August 2015 more than 150 scientists attended a conference to evaluate 21 potential landing sites for NASA's next rover, a mission called Mars 2020. Out of those proposed landing sites the Mars ...
2
votes
2answers
187 views

Were the previous Mars landers configured to transmit beacons or data during descent?

The ExoMars Entry, Descent and Landing Demonstrator Module (EDM) Schiaparelli was configured to broadcast a UHF beacon throughout the entry, descent and landing phases using multiple transmitters and ...
2
votes
2answers
191 views

Could a small Mars Cycler be used for repeated sample and big data transfers?

Imagine rovers collecting samples on Mars and launching them to dock with a Mars-Earth transfer spacecraft. This vehicle would be in a Mars cycler orbit which passes near Mars and Earth every 7 years, ...
2
votes
1answer
382 views

Martian Carbon Dioxide Turbine Oxygen Generator

How much solid Carbon Dioxide can be collected in a container with the top of the container level with the ground during a Martian Winter? Side Question: What do you call a generator that runs on the ...
2
votes
1answer
697 views

Real time communications in space

Today we use audio and video communications (using UDP protocol) over IP networks (VoIP) for communicating (Skype, Whatsapp, FB messenger). This works fine on planet Earth (although there are various ...
1
vote
2answers
602 views

What is stopping us from starting to terraform Mars right now?

Mars has stational liquid water on its surface, a CO2-rich atmosphere and its soil might lack some nutrients that plants need to grow there. So, what is stopping us from filling a rocket with seeds ...
1
vote
1answer
100 views

How does the contest for naming ExoMars work?

ESA is holding a contest to collect suggestions for a proper name for what is currently referred to as the ExoMars rover mission to Mars (mission page). Apparently, Rovy McRoverface and Marsy ...
1
vote
0answers
105 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 ...
1
vote
1answer
152 views

Magnetic Memory to Mars?

There seems to be (perhaps these?) a probe headed to Mars that has incorporated Magnetic Memory (MRAM) as an integral part of the mission. Is this a PR gimmick, or is MRAM actually the best ...
1
vote
1answer
358 views

When is Christmas on Mars? [closed]

The question, Will Santa Claus deliver presents to Mars in 2025? got me thinking. There are 24 well documented zones on earth, of when Christmas occurs. Does Christmas on Mars, come before, during or ...
1
vote
1answer
109 views

Will the countries ever co-operate again for the next upcoming era of Martian exploration? [closed]

In the beginning of space exploration, there was sort of a Space Race between the United States and Soviets in order to achieve something bigger to dominate over one another. But after a matter of ...
1
vote
1answer
452 views

Could Schiaparelli's retroreflector array (still) be used?

update 2: It appears Schiaparelli has already been located by satellite. This still represents the first laser ranging retroreflector array deployed beyond the Earth-Moon system! So assuming it is now ...
1
vote
2answers
364 views

How would travel to Mars without artificial gravity affect a crew's initial experience in Mars gravity?

This answer and the linked YouTube video discuss some difficulties with the experience of artificial "gravity" generated by small rotating craft (like one that could be launched to Mars in the near ...
1
vote
1answer
234 views

Why doesn't the perchlorate on Mars' surface oxidize metallic meteorites?

"Egg Rock" is a smooth, shiny nickel-iron meteorite found sitting on the surface of Mars on 30-Oct-2016. It is described the next day in Arizona State University's Red Planet Report website: Curiosity:...
1
vote
1answer
121 views

Can it be realistic to build a artificial magnetic field around Mars? [duplicate]

I was wondering how realistic it is to build an artificial magnetic field around Mars using electromagnetism. So my question is; what kind of current would be needed in a loop around Mars' equator to ...
0
votes
0answers
64 views

What would happen if an astronaut took off their helmet on mars? [duplicate]

Would lack of oxygen/suffocation or lack of pressure/blood or body fluids boiling kill her first?
0
votes
1answer
216 views

Could a reentry powered monorail and flywheel make a kinetic engine for lift?

On reentry could a flywheel spin on a magnetic bearing creating a centrifugal force to keep the ship level whilst creating a plasma air pocket from the pits in the rotating heat shield? This would ...
0
votes
1answer
191 views

Is a one-way manned mission to Mars currently possible? [closed]

I read about the manned mission here and I have a few questions: What prevents a return trip from Mars. Why can't a spaceship with efficient fuel, food and oxygen supplies be built for a return trip? ...
0
votes
1answer
53 views

Could a solar panel be modified to also collect a static charge on Mars?

I was waiting for someone to piece both of these questions together into another question. @Dragongeek was the first, Could a solar panel be modified to create a static charge while spinning to remove ...
0
votes
3answers
228 views

Can people be in orbit around Mars were they to blast the poles with Nuclear bombs? [closed]

IF we launched a series of nuclear strikes on the polar ice caps on Mars, would it affect anyone in orbit around mars (assuming we could have them in orbit around Mars in such circumstances)?