Questions tagged [mars]

Questions about the science or exploration of the planet Mars.

Filter by
Sorted by
Tagged with
5
votes
1answer
3k views

Why has no lander or rover visited Hellas Planitia on Mars?

While with this weeks discovery, I am sure everyone is waiting for the inevitable trip to Palantir Crater, I noticed that one Mars' largest crater, Hellax Planitia has never been visited by a lander ...
0
votes
0answers
39 views

Travel To Mars - Fast [duplicate]

I wonder if it is possible to design a mission to Mars that would slingshot around the sun i.e., gravity assist. The Helios misions (which used gravity assist from Sun as I understand) have done this ...
23
votes
2answers
880 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 ...
10
votes
1answer
197 views

What's the role of the chainmail and scale armor on InSight's WTS?

It's like taken directly from a medieval armor... The role of wind and thermal shield (WTS) deployed over the seismometer is in its name - protecting it from noise and thermal changes. This is fairly ...
2
votes
2answers
154 views

Could electricity 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 ...
10
votes
2answers
347 views

Why is the surface of Mars oxidized?

Before 2.5 to 2Gya, Earth's surface was a chemically reducing environment (evidence includes reduced forms of iron, sulfur, and uranium in rocks before that time). It is believed to have become ...
2
votes
2answers
59 views

How much would cost to take a kg to the same distance of the planet than LEO in Mars?

In Mars it's needed a much lower velocity to attain orbit. How would this impact the costs of taking 1 kg to the orbit of the planet, at the same distance of the planet than Low Earth Orbit but in ...
28
votes
2answers
6k views

Is it possible that Curiosity Rover measured its own methane or failed doing the spectrometry?

NASA published past June high methane concentrations were measured at Mars. This week, NASA's Curiosity Mars rover found a surprising result: the largest amount of methane ever measured during the ...
1
vote
1answer
243 views

What will the US send to Mars as mentioned in this statement to the press?

The video U.S. planning to send 'something beautiful' to Mars, praises SpaceX shows a statement made to the press yesterday. I've included a transcription based on the closed captions in the video, ...
3
votes
2answers
131 views

What new has come from the recent methane findings on Mars?

I was reading: https://www.cnet.com/news/nasas-curiosity-rover-makes-surprising-methane-gas-discovery-on-mars/ And, yes, I realize that cnet is not a good source of information, however it's more ...
8
votes
2answers
271 views

Significance of methane on Mars

Considering the audience of this site, many of you are likely aware that NASA has found methane on Mars. I've heard many people saying that this indicates that life is significantly more likely to ...
2
votes
0answers
62 views

Where exactly on Mars was Curiosity when this image was taken?

The BGR article NASA’s Curiosity rover saw something flash on Mars, and people are freaking out is one of many nearly identical clickbait articles about a recent image that contains a bright spot. ...
2
votes
1answer
106 views

Will the Mars 2020 rover's sensitivity to methane be better than Curiosity's?

The New York Times article NASA Rover on Mars Detects Puff of Gas That Hints at Possibility of Life describes the newest detection of a "whiff" of methane on Mars. The article states that the level ...
3
votes
1answer
207 views

Manufacturing rope, textile, and clothing on Mars

I'm wondering what the most space and mass efficient system is to construct woven products such as rope, textiles, or clothing on Mars. Current textile production strategies often rely on methods ...
4
votes
1answer
124 views

Part 1 - Wires, fasteners, and other metal hardware - mundane in-situ on Mars

Fasteners - screws, bolts, washers, brackets, conduit, nuts, wire - both coated and uncoated There are many sources of how we will mine the regolith for ores that contain useful quantities of water, ...
6
votes
2answers
2k views

Could Martian soil be used as material for a 3d metal printer?

I know this sounds like a 3d printing question, but it is more space oriented so bear with me. My reasoning for this post is that the Martian soil is comprised mainly of iron oxide, which gives it ...
16
votes
4answers
1k views

Is current state-of-the-art additive manufacturing (aka 3D printing) good enough to build parts out of Moon/Mars dust?

Additive manufacturing is currently being proposed as a way to greatly decrease the cost of establishing a permanent (robotic or human) presence on the Moon or Mars by sending only 3D printers to ...
14
votes
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 ...
14
votes
6answers
1k views

Is the “Mars blue dune” actually blue? And what makes it so?

NASA recently released an image of a blue dune on Mars. The accompanying story seems to suggest to me that it is a false color image - some property of that part of the image is detected and rendered ...
2
votes
0answers
32 views

At the same temperature, what's the relation of speed of heat loss between Earth and Mars?

Mars has a thinner athmosphere than Earth. Let's say you have a similar shelter of the same volume and made of the same materials in Mars at -70 Celsius, and in Earth in some place in the Antarctica ...
0
votes
0answers
34 views

Shirtsleeves environment in Martian caves [duplicate]

Are there currently any places on Mars (that we know of) that are deep enough and warm enough that a human could survive with only an oxygen mask? Are there any caves, trenches, or valleys deep enough ...
5
votes
1answer
73 views

What, if any, effect does the Martian magnetic field have on dust storms?

Since we know most dust particles on Mars are magnetic, I was wondering if they might be affected by the Martian magnetic field. Can the Martian magnetic field have any effect on the spatial ...
2
votes
0answers
65 views

Funding for small astrobiology fieldwork project

I am a postdoctoral scholar who plans to conduct a small project at the MDRS, a Mars simulation volunteer project. The project will be to conduct DNA sequencing of soil samples using a handheld nano ...
6
votes
0answers
129 views

Where on Mars are the known craters or collapse features with very high depth/diameter ratio?

Figure 1 of this article about craters and collapse features on Mars with high depth/diameter ratios shows that ratios higher than 0.2 are exceptional. This presentation of the Program of the Second ...
5
votes
3answers
286 views

Fast spining solar cells to clear Martian dust possible?

I've seen a fast spinning glass wheel used in front of a camera to clear away water, dust or ice. Could Solar panels be made circular and spin to clear dust off of them in the same way may? As ...
4
votes
1answer
85 views

How are martian dust devil maps made?

The Gizmodo article A Martian Dust Devil Swept Right Over NASA’s InSight Lander says: What’s unique about this most recent event, however, is that InSight was able to gather other forms of evidence ...
1
vote
3answers
127 views

What are the biological effects of a toe-to-head force gradient upon a human over the long term?

This question pertains to the notion of constructing rotating spacecraft and habs for human use in space in order to mitigate the effects of microgravity. Such craft have been a staple of many sci-fi ...
16
votes
3answers
4k views

Could “live” video be transmitted from Mars?

With the approach of InSight to Mars today, and the two cubesats watching it, much is being made about seeing "Live Video" from the cubesats. I'm pretty sure that simply can't happen, but I'm ...
6
votes
1answer
137 views

How many motors on the new Mars 2020 rover? (and other questions)

With so many different motors on the new Mars 2020 rover, I'd like to ask if each motor programmed to operate independently or can the different motors operate in sync with each other? Also, as a ...
14
votes
1answer
533 views

How did NASA's Deep Space Network encode and broadcast music to Opportunity?

@Ingolifs's answer to the question What was the last message to Opportunity today (13 Feb '19)? quotes ArsTechnica's Opportunity did not answer NASA’s final call, and it’s now lost to us: Late ...
8
votes
1answer
262 views

Why were Spirit and Opportunity separate launches?

In reading this question (Why A=2 and B=1 in the call signs for Spirit and Opportunity?), it prompted me to wonder why Mars probes Spirit and Opportunity were launched separately, even though their ...
6
votes
1answer
252 views

Understanding Von Braun's Math: Theoretical Isp

I've just read Wernher Von Braun's Project Mars: A Technical Tale, and I'm trying to understand the math in the back. I can follow some of what he's doing, but other parts I just can't tell where his ...
3
votes
1answer
193 views

Can we get to Mars today using current rockets/technology?

I was wondering if, using the rockets we have today (I'm guessing the most likely candidate is the Falcon Heavy), we could send at least 1 human to Mars. For arguments sake, let's ignore the fact it ...
2
votes
0answers
114 views

How does Mars have a Bow Shock and proton aurora? What is a hydrogen corona?

I just saw the NASA video Mars Proton Aurora below and I'm confused, (which by itself is unremarkable). Without a planetary magnetic field, what force produces a bow shock in the solar wind at Mars, ...
4
votes
1answer
176 views

Does Mars have badlands?

This excellent answer addresses the amazing 3D structures shown in the image below: The terrain examples show some striking similarities to what is referred to in the United States as "Badlands" - ...
2
votes
1answer
133 views

How are the most sensitive seismometers on Mars protected from the most powerful jackhammer on Mars just a few feet away?

In the image below we are supposed to be looking at the pretty clouds, but all I see is an incredibly sensitive set of seismometers sitting right next to a jackhammer that will slowly drive a metal ...
2
votes
0answers
206 views

How many sundials or sun compases are there on Mars?

According to https://www.seis-insight.eu/en/public-2/seis-instrument/rweb Sundial Around the handle is a small sundial, which enables geophysicists to estimate the azimuth— i.e. the ...
11
votes
1answer
141 views

Can a semipermeable greenhouse be used to extract CO2 from the Martian atmosphere and help provide oxygen to a colony without using a pump?

When doing an experiment on growing plants in sealed plastic bottles, I learned that many plastics, such as PET used for soft drinks bottles, are more permeable to CO2 than to N2 or O2 (see table 2 of ...
7
votes
3answers
797 views

How can a hefty sand storm happen in a thin atmosphere like Martian?

As perceived, sand storms on Mars are quite hefty. But how is that possible in such a thin atmosphere like Martian?
0
votes
0answers
37 views

Images of Mars Phoenix Lander showing what's happened after more cycles of winter ice build-up?

The Mars Phoenix Lander's End of Mission is an interesting story. It was left in a state such that had it survived the Mars winter of 2008, it could potentially be contacted again in 2010. The ...
2
votes
1answer
98 views

Will people living in Mars for several years be able to return to Earth without consequences?

Living without gravity has consequences for the bones and muscles. To counter that astronauts have to do exercise and lifting regularly when they go to the ISS. Now are there any plans to counter ...
7
votes
0answers
77 views

Method for keeping surface water on mars?

I've been reading this wikipedia article on terraforming mars. One of the major issues with terraforming mars is essential molecules and elements escaping the planet. There have been several ...
1
vote
1answer
132 views

NASA says Mars' soil has the nutrients for growing plants, how about the Moon?

Okey, that's not everything they said but I can't write everything in the title. NASA says Mars's soil has the nutrients for growing plants, though there may not be the right amount depending on where ...
32
votes
3answers
13k views

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?
9
votes
2answers
236 views

Is it possible to extend high speed data transmission with lasers to the distance Earth to Mars?

Data transmission using an optical laser between ground station and a GEO satellite may offer very high data rates, up to 1.8 GBit/s for instance. But what about a transmission from Earth to Mars ...
24
votes
1answer
26k views

How many active or inactive artificial satellites are in Mars orbit?

I just read in the BBC news that four nations have placed satellites in Mars orbit. How many active or inactive artificial satellites are there in orbit around Mars (2014)?
-1
votes
1answer
161 views

Could a Rotary Rocket charge a super capacitor while descending on Mars?

Could a rotary rocket entering the atmosphere collect enough energy in a super capacitor through the rotors (along with auto rotation) while descending to have a controlled landing in the last few ...
0
votes
1answer
58 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 ...
5
votes
2answers
138 views

How many spy satellites could be destroyed before the debris field would be too massive to launch moon or mars manned missions?

Obviously this is very statistical. Basically I'm looking for an order of magnitude. One geostationary satellite would cause a pinball effect or would it be more like 10 satellites? I'm concerned ...
2
votes
0answers
118 views

Could the BFR Tanker be used as an artificial gravity counterweight for interplanetary travel?

An alternative storyline to the Mars transport architecture: Tankers refuel starship, last Tanker gets mounted on the Starship for the Mars orbital injection burn, once on a Martian trajectory tanker ...