Mars Definition and 499 Threads

that this nation should commit itself to achieving the goal, before this decade is out, of landing a woman on Mars and returning her safely to the Earth.

https://www.nationalgeographic.com/science/2019/12/first-active-fault-system-found-mars2/ One insight on this is seismometers on Mars can provide data driven inferences about Mars deep crust structure with reliably located fault zones. Based on paper presented at AGU FallMeeting 2019 ...

First, i think this is the correct place to ask this question. So the story is that I'm working on a piece of fiction that I want to be as accurate as possible. One part of it involves an object that travels from Mars to earth. This would have been between February 22, 1901 (beginning of...

I know that ##v_{M/S}=v_M - v_S##. I also know that ##v_M = (-24.1;0)##. Then, using some trigonometry, ##v_S=(-19.3 sin 30°;19.3 cos 30°)##. So I can find ##v_{M/S}##. But that doesn't tell me anything about the angle ##\beta##.

https://edition.cnn.com/2019/09/30/us/nasa-life-on-mars-jim-green-scn-trnd/index.html If such were to become true. I guess there would be mass panic attacks, mass suicides, chaos, protests, igniting wars and strife, what else? I can imagine people just trembling. And how to prevent such...

So I've seen many similar questions like this on the internet, but they all involve using Kepler's law, which is not in my syllabus in my case. However, they do give me the mass of the Sun. which I assume involves gravitational force/field/circular motion? The question also gave me a hint that I...

As the problem asks for the spaceship's perspective, I know that I should take ##\vec v_S=0## and ##\vec v_M=24.1-19.3## because the motion is relative to the spaceship. Then, the relative velocity of Mars and ##SM## should have the same direction. If they have the same direction, that angle...

Perhaps this thread would be better located in the Earth forum (where hydrologists might more likely see it), but it is Mars not Earth. I recently read about a study on riverbeds (size, catchment size, meandering) on Mars that claimed large water flows in some riverbeds "late" in Mars history...

People found silica opals exist on the planet Mars, what does this imply about geochemical conditions on Mars?

Homework Statement Good evening, I have a homework where the question is "How high will person jump on Mars?" Homework Equations v2 = 2.amars.h1 V2 = 2.g.h2 The Attempt at a Solution I know everything to solve it. I can solve it by h1 / h2 . In this created equation the only unknown is h1...

Mars' red surface is said to be FeO rust. Rust requires Oxygen to exist. Are there any theories about where that original oxygen came from? I'm obviously trying to fish for possibilities of life in the past.

Homework Statement We want to send a satellite from a low Earth orbit of 320 km to mars. Calculate the change in velocity required to join the transfer ellipse. Homework Equations Earth velocity: (μS/REarthRev)1/2 Transfer velocity at perihelion: (2μSRMarsRev/(REarthRev(REarthRev+RMarsRev))1/2...

Watching "Mars" on National Geographics I try to calculate what the cost would be to bring anything usefull back to Earth. More specifically I wonder what fuel-payload ratio a rocket could have when lifting off from Mars. I want to use Tsiolkovsky's rocket equation Δv = ve ln(m0/mf) or Δv =...

Hi! I have a question about space suits on Mars. I've done a google search and find conflicting information. In my YA novel the protagonist makes a quick stop on Mars (just for a couple of minutes). I wonder if it's possible for a human to visit Mars surface for a couple of minutes with just...

Hi, I found an alleged ESA image showing massive "plume" on Mars. https://cdni.rt.com/files/2018.10/article/5bcf090cdda4c897418b45aa.jpg While there have been several reports of plumes in recent years but this is in plain view and looks like a major event but I don't seem to find anything...

Earth also has iron rich deposits, I think generally they are thought to be remains of meteorites. Same is likely for Mars, but there is a lot more iron (and compounds) on the surface of Mars than there is on Earth. Are there substantial amounts of silicate rocks, as Earth has?

NASA is looking for a process to use CO2 as a Carbon source on Mars; ultimate goal is to use the Carbon in the synthesis of other products. $50,000 prize. Open to U.S. citizens, permanent residents, and U.S. business entities, work must be done in the U.S...

Former 'Mars czar' in a Phys.org interview: Read more at: https://phys.org/news/2018-08-mars-czar-latest-news-red.html#jCp But would it? Surely the Moon is a perfect launchpad for Mars, a testbed, and a supply base? Going from Earth direct is a truly huge task. From an established Lunar...

They found an underground lake on Mars last week! Given that the lake exists and is actually liquid (and has a surface), two obvious questions come to mind: 1. Will I be able to beet my earthly current record in bouncing a pebble there? 2. If I release a pebble from a given height here and...

Conventional Wind turbines now have 3 blades. I assume this is a matter of average air pressure. 1)Would a future wind turbine working on Mars with about 1% of Earth’s air pressure need to have many more blades? 2) Would all those Victorian windmills have been any more efficient with 3 sails...

I guess water in Earth , in big lakes or seas, looks blue because the Earth's sky is blue and the water's surface reflects the sky. Now if there would be some big lake of water at Mars, how the water surface colour would be? I guess the colour of Mar's sky which is red (right or wrong?) It is...

The analysis is based on 29 radar profiles collected between May 2012 and December 2015. The identified region is about 20-km wide. The report acknowledges the results are consistent with with water or water-laden sediments. A brief discussion on the BBC (with no citations) asserted that...

I'm curious of what the weight of fuel would be to land and take off from Mars would be? I know it all depends on payload, but would it even be possible to blast a rocket from earth, with enough fuel to get to Mars, land on Mars, blast off from Mars, and then return to earth? My guess is that...

NASA Curiosity rover hits organic pay dirt on Mars Scientific article: Organic matter preserved in 3-billion-year-old mudstones at Gale crater, Mars

Curiosity has found seasonal occurrences of methane and some organic molecules on Mars. Both or possible indicators of carbon based life processes, but can have other non-biological explanations. Methane has been intermittently found previously on Mars. However, lacking a continuous long term...

I believe it is the CEO of Amazon that would like to establish a large colony on Mars, making the safe assumption that some extinction event on Earth will get us anyway. While there are numerous difficulties to this, there is one, I did not see mentioned, which makes this impossible. The...

Hi! I'm playing around with an idea for a story set on an orbiter around Mars. While Mars and Earth were on opposite sides of the sun, Earth got hit by a colossal coronal mass ejection even bigger than the Carrington event of 1859. So they see Earth rise but can't pick up any radio signals...

If/when we go to Mars how will we deal with time dilation due to the gravitational differences between the two planets?

Hi - I am trying to understand the relationship between atmosphere pressure, viscosity, and density - specifically water. Is there are way to estimate a range of dynamic viscosity and density values based on varying atmospheric pressures and/or temperature that I could use on any planet. Thanks...

Who's got some ideas? https://www.nasa.gov/image-feature/jpl/pia22348/formations-in-context-or-what-is-it

The images I have seen of Mars seem to show a more pronounced polar 'ice' cap on the South Pole than at the North. Could that be something to do with the times in the Martian year that the images are all taken (relative orbital positions vs winter and summer) or something else? Earth's South...

Struggling a bit in my astronomy class. Trying to understand ..Is there a way to make a 90 degree angle between Earth, Mars, and the Sun? Mars would be the vertex. Is there a simple basic answer? TIA

As some people may know, the hardest thing to do is create a habitable environment on Mars. Basic needs would be food, shelter and water. Assume that water and shelter are already available (for the sake of this topic) That leaves food.. Food crops could be grown on Mars, but after a while...

NASA decided to stop *WFIRST and concentrate on Mars project (send humans to Mars). What do you think about it? In my opinion, since a lot of ventures have begun space developments such as SpaceX and this proves that rockets make money, NASA should tackle WFIRST. Generally, we cannot earn...

The Technical University of Denmark has a page about the Martian magnetosphere in which it mentions the existence of localized mini-magnetospheres on Mars that are more powerful than the global field around Earth...

Homework Statement Homework Equations [/B] The two equations in the image, as well as (maybe) standard vector operations like dot product, cross product. The Attempt at a Solution [/B] So, I've tried to do what my instructor suggested and put everything in terms of Earth (Using RE and TE...

1. Homework Statement The first astronauts to visit Mars are each allowed to take along some personal items to remind them of home. One astronaut takes along a grandfather clock, which, on earth, has a pendulum that takes 1 second per swing, each swing corresponding to one tick of the clock...

Problem - we have to use large amounts of fuel/propellant to exit the Earth's atmosphere to enter Earth orbit, the moon or other planets... Solution - would it not make sense to launch from a base on the moon? Problems I see, potentially... 1) Is the moon’s orbit around Earth problematic for...

All the Wild **** We're Going to Do in Space and Physics in 2018 (forum censors the original title) Featuring all the interplanetary probes and various missions and milestones closer to Earth, the Event Horizon Telescope, Gaia, and a couple of things not directly related to space or...

i'v googled the subject and it seems like a serious problem, e.g. the dust accumulating on the solar panels, there has even been a term coined 'cleaning event' for Mars winds, as if this is a matter of luck to get the solar panels cleaned. A small carbon-dioxide vent on the tip of the rover...

According to recent research news, swedish PhD scholars have said that solar wind induces currents in the ionosphere of mars. This causes an induced magnetoshere which in turn protects the atmosphere from the same wind. This is quite difficult to believe. It is well known that Mars does not...

we know that the moon is far away the distance between us and the moon can fit all the other 7 planets and some small dwarf planets but how ? it would take us 3 days to reach the moon and the spacecraft were traveling in at least 240,000 miles it should take us more than a year to reach the...

NASA announced in 2015 that they found some evidence for the existence of liquid water on Mars today - at least temporarily and underground. A new study comes to a different conclusion and proposes sand as origin of the observed material transport downhill. As interesting as these features...

So long story short, I'm trying to write a scientifically accurate short story/animation thing and it revolves around a mass driver: it's a giant and deep hole on Mars with a magnet on the bottom or sides or something and fires packets of objects to Earth at breathtaking speeds (4.66 million...

Hi! I'm doing a research project titled "Is it possible to colonise Mars?" I'm currently researching how to raise the temperature and pressure - and I've discovered to do this that re-directing asteroids towards Mars containing Ammonia would be vital. However, where do these asteroids that...

Look into this url https://www.nasa.gov/mission_pages/mars/news/mars-20070315.html Some points to note are * The polar region contains enough frozen water to cover the whole planet in a liquid layer approximately 11 meters (36 feet) deep. * The radar sees through icy layers to the lower...

The asteroid belt is present between Mars and Jupiter but why is it spaced out like that? Why not between some other planets?

Elon Musk presents his updated plan for the colonization of Mars.at the International Astronautical Congress in Australia. First sending two pilotless supply ships to Mars by 2022 using a new rocket, the BFR,.

Hi, Do you think there is any feasibility at all to terraform Mars be crashing Europa into it? Of course, you have the near impossible task of knocking Europa out of Jupiter's orbit and guiding into Mars without ruining its orbit...but if it worked maybe this would give Mars the extra mass...

Specifically, how does the moon's mass and size determine the distance and orientation of Mars in relation to Earth. If the moon was drilled and mined of half its mass, would that have any significant effect in the solar system?