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Questions tagged [mars]

Questions regarding Mars, the fourth planet from the Sun.

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Is Titan Better or Mars? [on hold]

Isn't Titan better to colonize than Mars? It has a thick atmosphere which is made up of nitrogen like our planet's. It doesn't have a magnetic field, but it does get a type of protection from Saturn. ...
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Current delay for radio signals from the Mars InSight mission

I've been meaning to post it on the day when InSight landed but just got around to it now. When they broadcasted landing in real-time, it really wasn't in real-time because radio signals from Mars ...
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Can't see any detail on planets with my new Celestron NexStar 130 SLT Computerized Telescope [duplicate]

Mars looks like a small white blob/circle and the same with all other planets. This is very frustrating. I've looked all over for a solution jumping from site to site and nothing. Please be different ...
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Help understanding the false MRO observations of hydrated minerals on Mars

The Science News article An orbiter glitch may mean some signs of liquid water on Mars aren’t real begins: Some signs of water on Mars may have just dried up. Thanks to the way data from NASA’...
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What would happen to a woman who was teleported to mars while wearing a dress and skirt [closed]

I know that there is very little O2 on mars, very little pressure, and very cold temperature, but what would kill her first-suffocation, exploding, boiling body fluids, or exploding?
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Mars vs Venus: the retention of atmospheres in relationship to Earth

Correct me if I'm wrong, but the factors than enable a planet to retain or lose an atmosphere seem to be: 1. Magnetic Field, 2. Solar Winds, 3.Weight of Gases, 4. Planetary Temperatures. 5. Distance ...
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Mars looks like a blur

I took my telescope out tonight (I am new, just got the telescope a few days ago, it's my first one) and I was observing Mars, however all I see is just an bright orange circle, with no surface detail,...
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How thick or deep does solid carbon dioxide accumulate on Mars?

On Mars is there an area in which all the $CO_2$ evaporates exposing dirt near the pole? How deep can solid $CO_2$ accumulate during winter in that area during the Martian Winter? https://space....
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What magnification is required to see detail on Mars / other local bodies?

I have a 125mm Jones Bird newtonian telescope (very shoddy) with 6x lens (2× + 3×) essentially we were able to see a very small O (yeah that's to scale) with varied shades of red. Is Mars far away ...
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Has the Mars dust storm affected its naked-eye appearance?

Mars has been undergoing a planet-wide dust storm for a couple of months now. By my eye, while Mars currently looks a bright and handsome orange, there's been no change that I've been able to notice ...
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How deep in Mars would a person not need insulation and pressure? [duplicate]

How deep in Mars' surface would one have to go to both not need a pressurized suit and be warm enough to just wear clothes? in other words is there a dept Goldilocks where you would only need an ...
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Is the dot on the photo - Mars?

The below photos were taken yesterday (August 4, 2018) at about 10 p.m. from the plane over the Black Sea. We were seeing the light dot on the left for at least 10-20 minutes. It looked like a bright ...
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Mars and 115 mm - which eyepieces?

Today I could roughly see Saturn with ring structure for the first time with my Seben 114-1000 telescope. Then later I was dealing with Mars and found out that I must do something wrong, as with no ...
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Whats the probability of a hazardous impact for human life on Mars?

Yesterday my sister and I have discussed the recent efforts of SpaceX to create a permanent colony on mars. When coming to the several dangers of creating a habitat on a different planet, we got ...
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Is Mars brightest from Earth at opposition, perihelion or somewhere in between?

After reading this article, I was inspired to run some simulations at NASA's JPL Solar System Simulator to see Earth's and Mars' orbits from above. From what I could visually determine (from the JPEG ...
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How are mars years counted?

In this diagram about the methane concentration in the martian atmosphere, there are data points labeled "Mars year 32", "Mars year 33", and "Mars year 34". How are Mars years counted? Is there a "...
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Why are Mars northern/southern hemisphere altitudes so different?

I'm looking at the Mars topography map: original link ...and I can't shake the impression that someone just messed up the placement of the center point of the planet, shifting it about 8km north ...
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When will the next transit of Earth be visible from Mars? Was the last one really on May 11, 1984?

@PM2Ring's comment mentions the story Transit of Earth written by the famous British science fiction writer, science writer and futurist,3 inventor, undersea explorer, television series host, Fellow ...
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How will planets behave in the night sky as seen by Mars colonists?

Certainly among the first colonists on Mars there will be a few people interested in Astronomy enough to enjoy the night sky. For them, familliar Mars will be missing and there will be a new, ...
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Is the curvature of Mars visible from the top of Olympus Mons?

Would you be able to see the curvature of Mars from the top of Olympus Mons? And how much curvature would you see if it was visible, would it be only barely detectable, or would you see a lot of ...
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“Esperance” rock on Mars formed by erosion or weathering? or is there any rock on Mars not formed by erosion?

I was wondering if the "Esperance" rock that was found on Mars by the Opportunity rover was formed due erosion or weathering? I have been reading a lot online but I did not seem to find anything. Does ...
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Mars night sky — Phobos and Deimos?

I'm having a debate about how bright Martian nights would be, in terms of both the sky itself and ground illumination. This answer seems to indicate that the stars would be only dimly visible, and ...
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What would a terraformed Mars look like from Earth?

Question in the title. Currently, Mars is a small orange dot in the sky. But what if green, blue, and some white were added? I wouldn't expect it to be too different- a large portion of it will remain ...
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Can Liquid Water exist on Mars?

Outside of a specially crafts environment, could liquid water exist on Mars? Not some time in the distant past, but within the last few years. Mars' atmosphere is too thin for water to exist, right? ...
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How to calculate when Mars was in retrograde around 129 BCE?

I am trying to make an accurate illustration of the sky from when Ptolemy was observing the planets in Greece. I am trying to find out when Mars was in retrograde during those years. I have read ...
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Where does the CO2 in Mars atmosphere come from?

As far as I know, Earth and Mars were relatively similar when the solar system formed. So most of the CO2 was used to form carbonic rocks (right?). I found that tectonic movements are the reason that ...
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What are these dark spots on Mars' north pole?

I was exploring Mars in Google maps and I found these dark spots, like tree shadows on the north pole. I don't have any idea what they might be. View this in Google maps.
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Which worlds have unique words for a “day”?

On Mars, we refer to a "day" as a "sol". NASA has developed a whole vocabulary around this term, like "yestersol" and "tosol", etc. Do any other worlds have unique terms like this? How would one ...
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Strange square-like formation on Mars

Recently I've explored an area on Mars' surface which one looks like huge hatch cap & hole, about 10 kilometers, between tons of circular craters. The formation is very unique and strange to me. ...
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Kepler - Creating the Ellipse (Astronomia Nova)

In Chapter 58 in Astronomia Nova, Kepler made his final step to finally create the ellipse (for the orbit of planets) http://science.larouchepac.com/kepler/newastronomy/part4/58/index.html In the ...
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Mean and true Sun

I have problems to understand the point of "mean sun" and "true sun". As I understood the mean sun is set in the center of the earth orbit (which is a circle). So Ptolemy, Copernicus and Brahe used ...
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Kepler and the Sun position

When Kepler went to Tycho Brahe, he learned that Tycho Brahe was using the mean position of the sun to note down the position of Mars. Well, Kepler needed to convert these datas of Brahe to do his own ...
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What could be the possible origin of boron found in the Martian soil if not from ancient groundwater?

In a recent observation reported in the ScienceAlert article 'Boron has been detected on Mars for the first time" reporting that The Curiosity rover has found boron on the surface of Mars, ...
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Has the iron core of Mars really solidified?

In the Nova episode "Origins: Earth is Born", Neil DeGrasse Tyson states, "But Mars is just a fraction the size of the Earth, so it cooled more rapidly. And as it cooled, its molten iron core hardened....
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Martian Constellations

I was wondering if the constellations visible from Earth would also be visible from Mars. Would they look the same but just shifted slightly in the sky due to the larger circumference of the orbit?
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Question about mars polar caps

I want to see Mars polar caps by myself. Is it feasible to make a picture of mars like this at home or to achive this very expensive telescope is required? P.S. Maybe someone can give me a link, ...
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Is the wind's intensity on Mars similar to Earth?

I've read that in Mars' poles, the winds can be as fast as 400 km/h, when the poles are exposed to sunlight because the frozen $CO_2$ sublimes. I know that the Martian atmosphere is much thinner than ...
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How did ancient astronomers know to order the planets from the closest to the farthest from the Sun?

If we assume a geocentric model of the universe (like ancient astronomers did) how could we ever find out (again, like ancient astronomers did) the right distances of the planets? For example, how the ...
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How easy would be to see the Moon from Mars?

This question arises from "What planet is better than earth to infer solar system configuration?", where one of the answers pointed that it's easier to discover the Moon from Mars than discovering the ...
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If Jupiter was placed in Mars' orbit, how would Jupiter appear from the naked eye? [closed]

If Jupiter were as far from us as Mars, how big would it appear in Earth's sky? Would it appear huge, or would it be as small as a star?
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If Mars were tidally locked to the Sun, what would the temperatures on its surface be like?

Since there's very little atmosphere on Mars, it doesn't matter much whether the Sun is in the zenith or hanging just above the horizon: without the atmospheric "filter," the sunlight would have ...
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What is the temperature 55 km beneath the surface of Mars?

What is the temperature 55 km (34.18 miles) beneath the surface of Mars? The reason I ask is that I want to know if it might be habitable for a possible future colony if they could dig that deep (...
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At what depth on Mars would the atmosphere have equal pressure of that on Earth?

I know the atmospheric pressure on Mars is less than that of Earth, and so is its gravity. However, I know that the deeper you go (e.g. in a cave or a hole that is dug), the more atmospheric pressure ...
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Topography / elevation data of Mars

For a design project I'm looking for elevation data for Mars' surface - the idea is to replicate a surface area of Mars as a physical model, using the elevation data to create a very rough 3d model of ...
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Ground Induced Currents on Mars

Since Mars is only weakly magnetized does Mars not suffer from ground induced currents or are they far worse than on Earth?
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What explains the distribution of new impact craters on Mars?

24 minutes into this van Karman lecture by Dr. Tamppari, the slide below is shown with symbols for transient events on Mars. Red dots represent meteoroid impacts which have occurred while MRO has been ...
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Can we find rocks from Venus or Mercury on Earth?

As we know, we can find rocks from Mars on Earth, how about Venus and Mercury? Is that not found yet? Or it is impossible to find them because they are closer to the sun and derbis won't go far away ...
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When Phobos collides with mars (or breaks up), will it have any noticeable effects on Earth?

When Phobos meets its predicted doom in a few 10s of millions of years, whether it breaks up or collides with the surface of Mars, will this change have any noticeable effects (permanent or temporary) ...
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Is the Earth going to evolve towards Mars' fate or Venus' fate?

Upon reading on this site (and many others), one can think that Mars might have supported life in a distant past (discovery of liquid water, valleys, mountains...). On the other hand, Venus is the ...
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As viewed from Mars, what are Jupiter's and Saturn's maximum brightness in apparent magnitude?

From Earth, Jupiter's maximum brightness is -2.94 and Saturn's is -0.24. But what about from Mars? They should be brighter, but by how much? There are equations at the obvious wiki entry but I'm not ...