Mars Definition and 506 Threads

Should there be a world wide joint manned mission to Mars (including landing to the planet) before 2020? If Yes, then also sign the http://www.petitiononline.com/mars2019/".

In looking at the Martian hemispheric dichotomy (significant differences in the Martian crust over a large radius) simulations suggest that Mars was hit by something like a 1000 to 1700 mile wide asteroid about 4 billion years ago. http://www.sciam.com/article.cfm?id=giant-asteroid-flattened...

I'm probably going to get flamed hard for this but, I just want to see what type of reaction I'd get. BUT, in leu of recent events regarding Mars, I thought I'd start this fun little thread. In my completely uneducated, far-out opinion: Mars possessed life in the past. Some eon's ago...

After the initial shock and excitement, do we commandeer the the planet and take if for ourselves anyway? Pollute it with Earth species or extremophiles? Will an environmental impact study then be required? And if they are more advanced, do we hide and hope they didn't see us lest they do...

Homework Statement You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, where the acceleration due to gravity is 3.71 meters per second per second. The pressure at the surface of the water will be 140 kPa, and the depth of the water will be 13.8...

The soil on Mars has been found to have nutrients which would be conducive to supporting life: http://www.msnbc.msn.com/id/25396378/ All the more reason for us to go and start farming over there.

http://www.itwire.com/content/view/18901/1066/ This just popped up. I guess more news services will have it shortly.

Here it is! It's now official: http://www.msnbc.msn.com/id/25274243/ Water has been found on Mars! :) Now we just need to melt it all.

This is a purely hypothetical question, of course -- but what if our solar system had evolved with Mars and Venus switched, with each occupying the other's orbit? Would each have ended up more Earth-like today as a result?

So now that the Phoenix Land has all but confirmed to us that there's plenty of water on Mars, this will then spark increased interest in colonizing it. So the main obstacles to Mars being habitable are: 1) Low atmospheric pressure 2) Low temperature 3) poisonous atmosphere 4) absence/scarcity...

I've always wondered if Venus, which has many similarities to the Earth, would have had an Earth like habitat if/when it was further away from the sun like the Earth is. I also don't know if or how orbits and day length are affected by distance from the sun as well. On the assumption that Mars...

An article from the Globe and Mail, the 37 million dollar Canadian space station onboard phoenix reports its first weather readings. If your planning on traveling to Mars for a spring getaway I suggest you pack your winter clothing. "Mars weather forecast: Clear skies, high of -30 ANNE...

The very recent Phoenix landed on Mars to examine soil and scrap ice etc. Just a prelude to a more sophisticated rover pending. But what if Mar's ice is a billion + yrs old, and hard as marble, perhaps? A new form of ice, not seen, nor conceived yet, on earth? Perhaps drilling; but not a core -...

http://news-info.wustl.edu/tips/page/normal/11767.html 25 May it will parachute down and at the last moment let go the chute and use retrorockets it will not land on the polar icecap itself but on a level plain where they think there is ice a foot or so down below surface it has a...

[SOLVED] Harmonic Motion of Pendulum on Mars Homework Statement The problem is as follows: The acceleration due to gravity on Mars in 3.7m/s^2. A mass is suspended from a spring with a force 10 N/m. Find the mass suspended from this spring that would result in a one second period on Earth...

Homework Statement The Mars Odyssey spacecraft was launched on April 7, 2001. It underwent orbital insertion. To minimize the amount of fuel required for the insertion process, a highly elliptical orbit was chosen, but circular orbits are far superior for the type of mapping work in...

http://space.newscientist.com/article/dn13748-stephen-hawking-calls-for-moon-and- Has anyone an estimate of the cost of supporting a first generation on the Moon, for arguments sake let's say a colony of 100 people.

Before the final rocket stage the Mars lander was set spinning with an angular velocity directed along the engine force vector. I am completely lost to why they did this. By spinning the lander do they speed it up? Using the right hand rule the angular velocity vector points in the direction...

Homework Statement First variables deal with which to colonize a: Mars easier to terraform *or so I've been told* or b: the moon close yet hard to stabilize; the main point of the assignment that i have trouble with is finding a new age propulsion system and a working systems of checks and...

Haven't we been looking at this dead world for three decades now? There are geysers on one of Saturn's smaller moons, hydrocarbon lakes on Titan, and a potential ocean under Europa's ice. Are there any good reasons why space agencies are still wasting their time with Mars instead of venturing...

Homework Statement the problem is one of understanding. if heat is incident on a surface raising the temperature to some number then conducts through the solid to the other side how much heat energy is actually at the other side?? i understand the temperatures will be different and that heat...

Hello, This is my first post on this site, but I find that I have gotten myself into a nice confusion as to where I should go in solving this problem. I am trying to figure out the amount of energy needed to leave the moons surface and arrive in orbit around mars. Assume all the average...

Is there advantage of measuring stellar parallaxes from Mars rather than from Earth? Would it be more accurate than from Earth? Thanks

hey guys, im trying to model a loop heat pipe (lhp) system to cool various things on a spacecraft mission to Mars for a project I am doing in uni, does anyone know any equations that i could use to compute a value for length of lhp etc?? I've found lots of journals on the internet giving...

The curvature in Mars is such that its surface drops a vertical distance of 2.0 meters for every 3600 meters tangent to the surface. In addition, the gravitational acceleration near the surface is 0.4 times near the surface of Earth. What is the speed a golf ball would need to orbit Mars near...

Spaceship entering mars! okay guys so you have to open this file to read the question accuretely.. i have done some calculations but not sure if they are correct. So just this as best as i can, fist i figure out my semi-minor axis = a by 150km +150 KM +230 km =530km (major axis) now to...

Sending a spacecraft to mArs! Help! pLease! okay guys so you have to open this file to read the question accuretely.. i have done some calculations but not sure if they are correct. So just this as best as i can, fist i figure out my semi-minor axis = a by 150km +150 KM +230 km...

orbital speed of mars! help!? Mars is 230 million km from the sun. It completes one orbit in a period of approximately 687 days. Calculate the orbital speed of Mars in mph. OK so gave me the formula which 2*pi*r/ Period r= distance from the planet to the sun. and cirmumference = 2*pi* r...

Homework Statement the thermal radiation of mars Homework Equations i understand Earth radiates at 237W/m^2 into space but i can't find out how much Mars radiates, i know it has an average temp of -55 degrees C so i know its going to be a lot less but i don't know how much. i need this...

During the Viking missions to mars, three experiments were done to search for traces of life. The pyrolytic-release, labeled-release and gas exchange experiment. The PR showed positive, and non positive on the control on the first cycle, then the rest were inconsistant. The LR showed positive...

Homework Statement I have a cylindrical water tank of mars, where acc. due to gravity= 3.71 The pressure at the surface of the water is 110 kPa, and the depth of the water is 14.5 m The pressure of the air outside the tank is 91 kPa Find the net downward force on the tanks flat...

Hello. I would like to share some images taken by the Mars Express spacecraft . Please click on the links below. Thanks. http://www.marsesa.9f.com/slide_show.html Source Image: http://esamultimedia.esa.int/images/marsexpress/306-230906-3253-6-co2-Cydonia_H.jpg

Based on my title, I have the following questions: 1) What are all the challenges for man to go on the moon? 2) What are all the challenges for man to go on the Mars planet? I am mostly interested in what speed, what direction the shuttle is launched at? How much fuel is used in this...

The asteroid 2007 WD5 was reported as having a 1 in 75 chance of hitting Mars on January 30, 2008. This was based on observations through December 21, 2007. New observations are in. It's predicted path is getting closer to Mars. The media won't run another story until NASA makes another...

Mars will be unusually bright this Christmas Eve and the moon will be shining full — a development that might make Santa Claus rethink his need for Rudolph's red nose. That idea, from Miami Space Transit Planetarium director Jack Horkheimer, made us wonder if retooling a certain reindeer...

Homework Statement THe question says 3 forces, F1,F2,F3 act on an object. The net force acting on the object is 0, so it does not move. 1.If we are now on Mars where gravity is now 3.72m/s2 will the forces still be balanced? 2. The other question asks if we were on Mars g=3.72m/s2...

I am not a student of astronomy or physics, or any sciences for that matter. But I do have some things I wish to ask the scientific community here in the hopes of better understanding all of your viewpoints as to the title of this topic. First question: a. Assume that Earth is about to face a...

The Martian satellite Phobos travels in an approx circular orbit with r=9.4*10^6 meters and period 7h 39min. Find the mass of mars. I am supposed to use the concept of gravitational F=centripital force=m\frac{v^2}{r} and the fact that v=\frac{2\pi r}{T} so this is my attempt...

Homework Statement Consider an orbit transfer to lower the apoapsis of a Mars mapping orbit. The initial orbit has a periapsis radius of 3800 km and an eccentricity of 0.5. The final apoapsis radius is to be 1/2 of the initial one. Note that only one burn at periapsis is needed to perform this...

Fan shaped deposits at the south pole have been attributed to CO2 gas geysers: Gas jets spawn dark 'spiders' and spots on Mars icecap. http://themis.asu.edu/news-polarjets This MOC image might show a similar process occurs at the north pole: North polar terrain...

What are the possibilities that there is a manned Mars mission in the year 2019 (or before)? What are the main problems we should solve, before we can send humans to Mars? Why is it difficult to solve them in 12 years? Money, perhaps? Is it possible that USA, Europe, Russia and China will...

Of course, by now, you've seen the stories about Mar's past oceanic environment. http://www.ctv.ca/servlet/ArticleNews/story/CTVNews/20070613/mars_study_070613/20070613?hub=TopStories What I have noticed is that the word Mar as in the Spanish or Latin "Del Mar" (of the sea), means ocean...

http://www.space.com/scienceastronomy/070605_mars_hole.html http://apod.nasa.gov/apod/ap070528.html Pretty interesting. Sorry if this has been posted... I didn't see it anywhere.

Firstly, this isn't my homework question. I was trying to answer another, broader question for a student, and it boiled down to this one. There's quite a subtle point here, I think, but I just can't grasp it. Consider stable atmospheric conditions on Mars and Earth. A feather is dropped from...

When they say it takes about 5-6 mins to send radio signal back to earth, what kind radio signal are they talking about? Not FM/AM signal right?

I was looking at this picture of the asteroid belt on wikipedia http://en.wikipedia.org/wiki/Image:InnerSolarSystem-en.png And assuming that the picture is somewhat accurate in the placing of distance between objects in the solar system, I couldn’t help but wonder if it’s possible that the...

What program/field of study would be good to become an astronaut, with the hope of one day going to mars?

I'm helping edit a textbook with a deadline in hours. Need to check some "prevailing wisdom" on Mars. Did I hear recently that the jury is in on recent water found? That it's bone dry? Unrelated question: Is this an accurate statement? "...the surface of Mars once had lots of water...

Description: You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, where the acceleration due to gravity is 3.71 meters per second per second. The pressure at the surface of the water will be 150 kPa, and the depth of the water will be 14.2 meters. The...

Why would you want to send men? Why not a hundred more rovers.. They could do a LOT more and better explorations for a fraction of the cost. At this point in time sending men just does not make sense. Perhaps in the distant future, after we have completed exploration of the solar system there...