Read about mars | 132 Discussions | Page 1

  1. Electrical

    B How scientists calculated the weight of Mars

    How scientists calculated the weight of Mars to be 6.39 × 10^23 kg?
  2. Miles Behind

    Simple atmospheric question re: Mars

    Assuming that both the Earth and Mars's atmospheric pressure follows an exponential curve, how many kilometers deep would the average bore-hole on Mars need to be in order to arrive at a depth where the atmospheric pressure was 0.35 bar or approximately 5 psi? What about 0.7 bar?
  3. Edge5

    I Opal crystals on Mars

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

    B Lift-off from Mars

    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 =...
  5. T

    NASA NASA Challenge - CO2 Conversion

    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...
  6. A

    I Would going to the Moon delay going to Mars?

    Former 'Mars czar' in a interview: Read more at: 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...
  7. Delta2

    B Water colour in Mars

    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...
  8. F

    I Liquid water reservoir reported under Mars polar cap

    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...
  9. DrClaude

    I Organic molecules found on Mars

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

    B Traveling to Mars and time dilation

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

    NASA [NASA] Cosmological projects instead of space exploration

    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...
  12. Phantoful

    How do I solve for the angle, as a function?

    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...
  13. Rednecknav

    I Moon vs Earth for launch to Mars

    Problem - we have to use large amounts of fuel/propellant to exit the earths 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...
  14. mfb

    SpaceX SpaceX Falcon Heavy Launch

    All the Wild dang 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 spaceflight...
  15. mr1batman

    B Distance between the Earth and The Moon

    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...
  16. T

    I Where in our solar system are asteroids that contain ammonia

    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...
  17. shihab-kol

    B Position of the asteroid belt

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

    B Mars Dust Storms

    Recently I read a book about Mars, and it says that global sandstorm blows from southern hemisphere to northern hemisphere at perihelion. It's because the southern part is more heated at that position and the closer distance to sun gives it a high temperature, thus sublimating large amout CO2 in...
  19. N

    A Would a larger Martian moon create a stronger magnetic field

    I have read a previous forum discussing the possibility of creating a stronger magnetic field on Mars using tidal forces by putting a larger moon in orbit around Mars. My question is how large of an object would it have to be compared to Mars and how distant would its orbit need to be from the...
  20. ramzerimar

    SpaceX About the SpaceX Interplanetary Transport System

    I know mars colonization is a hot topic these days, and there are a lot of threads on this topic, but I would like to discuss specifically the SpaceX Interplanetary Transport System. There's a video on the subject here. On a recent thread that I posted here, some people came to the conclusion...
  21. N

    Changing Venus' Atmosphere

    I thought a bit about the prospect of terraforming other worlds starting with the ones closest to us, Mars and Venus. Personally even though I don't mind the hype over Mars, I prefer thinking of Venus as the main target for terraforming. it's just a lot more tempting. for example: It's surface...
  22. A

    I Great oppositions of Mars

    Why do the Great oppositions of Mars always happen at the same time of the year? What is that time?
  23. G

    Mushrooms and forests of Mars

    I'm going to write a space opera, a part of it involves Mars. I wonder about the plausibility level of my following imaginations. "She descanded on the space elevator. The landscape outside looked like a mushroom field. There were transparent and red ones. The hats of the former ones were big...
  24. E

    I How does mars have a magnetic field, with a cooled core?

    I have been studying astronomy and astrophysics for about 2 years now, though on my own time and by my self. A recent question came into my mind, Can arctic planets exist close to their star? Now, in my understanding of planetary science, in order for a planet to be cool and close to the sun, it...
  25. Raptor112

    Carbon Dioxide in the Martian Ice Caps

    Homework Statement The Viking landers on Mars measured a seasonal change in surface pressure of 2.5 mb due to the variation in the seasonal extent of the ice caps. Ignoring any elevation variations on the surface of Mars, calculate the difference in the total mass of CO2 in both ice caps...
  26. A

    Aerostat on Venus vs Surface Colony on Mars

    Idk where i picked this up, but there is one other plausible colony destination for humans: Venus. After a few trips on the net, i've come to the "Aerostat on Venus" side instead of a colony on mars. I'll mention some of the reasons i've picked up as to why: 1. Tons of CO2, we can use that. 2...
  27. R

    Space Travel to mars

    So off to Mars we go. But really how are we going to get there? The most expensive part of space travel is overcoming atmosphere. So you could say the biggest obstacle of space travel is Earth travel. It takes virtually no energy to cross space but it takes massive amounts to get into space...
  28. R

    About the resupply missions in "The Martian"

    Two instances were discussed in the film where unmanned cargo ships were mentioned to send up supplies to extend the time Whatney or the crew of the Hermes could survive. This brought back painful memories while watching the movie. It's such an obvious answer. In the space shuttle Columbia...
  29. @PK nd

    Life on mars

    Does discovery of flowing water on mars means that life even in microscopic form is possible ?????
  30. chi_rho

    Travelling to Mars at constant velocity? Weightless?

    If I'm travelling on a spaceship at a constant velocity (say 10000 m/s) towards Mars will I feel weightless, or will I feel nearly weightless because I will still be slightly affected by gravity? I know that when astronauts are in the ISS they feel weightless because they are in a constant...