Questions tagged [mars]

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

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What does “clumps and streams” of hydrogen leaving Mars' atmosphere really mean? Are there images of them?

This excellent answer to Just how huge is Mars' cloud of hydrogen? links to the 14 October 2014 Nature News item "Hydrogen Cloud Blows Off Mars", by Alexandra Witze, https://www.nature.com/news/...
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What are the physical requirements of an astronaut for a Mars mission likely to be?

I realize that there's a lot of speculation involved here, but current actual mission profiles have PT programs and general wellness specifications. It seems like the qualifications would be a ...
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665 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 ...
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Visible sky features from Mars

For the purpose of this theoretical question, please assume the following criteria: The person will remain on the planet for at least a few years allowing for Mars to complete an orbit. The person ...
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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 ...
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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 ...
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What are the louver-like structures on the sides of the Mariner 4 probe?

The COSMOS Magazine article First mission to Mars: Mariner 4’s special place in history July 14, 1965, forever changed the way we see Mars. Tim Wallace looks back at one of NASA’s greatest triumphs ...
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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 ...
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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?
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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 ...
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Are there any photos of the Martian terminator from low Mars orbit?

This photo of Earth was taken from the ISS, an altitude of 211 nautical miles. This photo of Mars was taken 71,000 kilometers above Mars (about 10 Mars diameters away). Are there any images of the ...
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482 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 ...
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Are Mars' atmospheric CO₂, O₂ and CO in equilibrium? Are sunlight or chemical reactions involved?

According to the NASA JPL video linked below the top five gases comprising the martian atmosphere include CO₂, O₂ and CO. Do the proportions reflect some chemical equilibrium? Are sunlight or chemical ...
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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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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 ...
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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 ...
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408 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 ...
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186 views

Why is a corner of InSight's selfie cropped like this?

A couple days ago, InSight took a selfie from the surface of Mars: Image credit: NASA/JPL-Caltech Most articles about it note that the photo is a composite image, which you can figure out by looking ...
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816 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 ...
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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 ...
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Do Mars rovers have irises? How do they safely look at the Sun?

This excellent answer by @MarkAdler to the question Opportunity's last tau was 10.8; what does that mean and how is tau defined and measured? explains that Curiosity uses its PanCam to image the Sun's ...
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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 ...
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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, ...
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Where on Mars will China's rover land?

Inspired by this question about all the missions to Mars in 2020, where on this planet will the rover of the mission that China has planned, land and operate ?
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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 ...
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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 ...
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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 ...
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Which Viking-1 orbiter photo is this? When was it taken and what part of Mars is shown?

This answer to Are there any photos of the Martian terminator from low Mars orbit? includes (without credit) what looks like an oft-repeated photo of Mars. A comment written from reverse image ...
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Could not silica aerogel dramatically increase the atmospheric pressure on Mars?

In the NASA article Want to Colonize Mars ? Aerogel Could Help a study about the potential of aerogel as a building material on Mars is reviewed. In an experiment 2-3 centimeters of silica aerogel ...
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Methods of lightning detection on Mars?

Teslarati's NASA’s next Mars rover will pave the way for humans includes the graphic below which is an artists conception of a dust storm on mars. It shows what looks like lightning or some kind of ...
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373 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 ...
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Martian Watershield Greenhouse

Would a greenhouse using a watershield 10 meters in depth be able to receive enough sunlight to grow crops?
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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 ...
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Speed needed for the ship to escape Mars, on The Martian movie

Based on the two speeds and altitudes that are presented in the movie: "The Martian" which are respectively 741 m / s and 1350m, 850 m / s and 1843 m I would like to prove with calculations whether or ...
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242 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 ...
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141 views

Will the Mars helicopter be able to remove the dust from solar panels?

Athough i'm not that worried about Insight's solar panels that i didn't sleep well because of that, this question got me thinking ! The Mars Helicopter Scout is a planned robotic helicopter that ...
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161 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 ...
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How bright is twilight on Mars compared to Earth?

The surprising answer to How much more quickly does night come on Mars compared to Earth? Will it be easier to see Mercury there? is "up to two hours(!)" "...indicating that Martian dust extends very ...
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277 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:...
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228 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 ...
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193 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? ...
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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?
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How big a nuke would be needed to break Phobos out of orbit?

Phobos Radius: 11.267 km Orbital period: 8 hours Equatorial rotation velocity: 11.0 km/h (6.8 mph) (at longest axis) With an 8 hour orbit around Mars it must be going at a fair clip already which ...
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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 ...

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