mars size compared to earth
217475
Equatorial diameter 6,804.9 km (4228.4 Miles)\n(0.533 Earths)\nPolar diameter 6,754.8 km (4197.2 Miles)\n(0.531 Earths)\nOblateness 0.007 36\nSurface area 1.448×108 km2 (55.907 Million Square Miles)\n(0.284 Earths)\n\n\n"Mars-5-inch-thing" Sure... but in which category of questions are we?
42267
i'm pretty sure that it's either 3 times greater or 9 times greater coz the gravity on mars is more than that of earth.\nbut i cant decide which one of them is the right one.
352200
Titan is smaller than Mars. There are no moons in the solar system that are as big as Mars. Ganymede is the biggest out of Jupiter's moons (Callisto is second) and also in the solar system. Titan is the second biggest moon in the solar system, and Callisto is third. Ganymede and Titan are the only moons in the solar system that are bigger than Mercury. Callisto is slightly smaller. I hope this helps.
221631
It will cost about $1 billion to get to Mars. The atmosphere is carbon dioxide. You can't breathe it. There is no weather on Mars. THe Size of MArs is about one-eighth the size of Earth.
322057
The average distance from Mars to the Sun is 1.52369 astronomical units.  One astronomical unit (AU, the average distance from the Sun to the Earth) is 1.49597870E11 meters.\n\nConverting those numbers, then, means that Mars is:\n\n1.52369 * 1.4959787E11 meters = 2.27941E11 meters, or, converting into English units:\n\n141,635,833 miles (on average -- remember that the orbits of the planets around the sun are not circular, but elliptical)
677257
Sorry dude... your friend is right!\n\nAntartica:\n\nArea...\ntotal: 14 million sq km\nland: 14 million sq km (280,000 sq km ice-free, 13.72 million sq km ice-covered) (est.)\nnote: fifth-largest continent, following Asia, Africa, North America, and South America, but larger than Australia and the subcontinent of Europe\n\nRussia:\n\nArea...\ntotal: 17,075,200 sq km\nland: 16,995,800 sq km\nwater: 79,400 sq km\n\n--\nsf
536221
Mars \nThe planet that is fourth outward from the Sun. Mars has a mean heliocentric distance (semimajor axis) of 1.524 astronomical units, equivalent to 141.6 × 106 mi (227.9 × 106 km). Its orbital eccentricity of 0.093, one of the largest of the major planets, causes the distance between Mars and the Sun to vary from 128 × 106 mi (207 × 106 km) at perihelion to 155 × 106 mi (249 × 106 km) at aphelion. The mean diameter of Mars is 4212 mi (6780 km), or about 53% that of the Earth. The planet has a mass of 7.08 × 1020 tons (6.42 × 1023 kg), about 11% of Earth's. The sidereal rotation period is 24h 37m 22.7s, corresponding to a mean solar day of 24h 39m 35.2s.\n\nMars appears to the unaided eye as a bright, slightly reddish star. Having a mean (synodic) period between oppositions of 780 days, Mars is in conjunction with the Sun every other year. Viewed through a telescope, Mars usually appears as a bright reddish disk marked by complex, semipermanent dark regions and variable white polar caps.\n\nInterior\n\nAccurate measurements of the planet's gravitational field made by orbiting spacecraft have shown that Mars has a dense core and thus is differentiated into a core, mantle, and crust. The crust, composed of silicate rocks, enriched in silicon and aluminum and deficient in magnesium, is believed to be about 30 mi (50 km) thick. Over geologic time, partial melting of the crust or upper mantle has caused lower-density materials to float to the surface, creating the observed lava plains and volcanic structures.\n\nAt present Mars does not have a global magnetic field of appreciable strength. However, early in its history Mars must have had a more substantial magnetic field, because its near-surface rocks exhibit strong remanent magnetism. See also Rock magnetism.\n\nGeology\n\nThe Martian surface has been modified extensively by the processes of impact cratering, volcanism, faulting, and fluvial erosion. The terrain in the southern hemisphere is very heavily cratered and thus quite old, having formed some 3.8 × 109 years ago. Much of it stands 1–2 mi (1–4 km) higher than the planet's mean radius. By contrast, the northern hemisphere is dominated by vast, lava-covered plains with relatively few impact craters and an average elevation of about 3 mi (5 km) below the mean radius.\n\nThe Tharsis rise, or bulge, is an uplifted portion of the surface that stands several kilometers above the mean elevation of the planet. Most of Mars's tectonic features are associated with Tharsis, which affects approximately one-quarter of the entire surface.\n\nThe Martian surface exhibits several enormous shield volcanoes. The largest and perhaps the youngest is Olympus Mons, which is nearly 370 mi (600 km) across at its base and stands approximately 16 mi (26 km) above the surrounding terrain. Three other large shield volcanoes, Ascraeus Mons, Pavonis Mons, and Arsia Mons, lie along the nearby Tharsis rise. In shape and structure the Martian shield volcanoes bear a strong resemblance to their Hawaiian counterparts. At the summit of each shield is a complex of calderas, collapsed craterlike features that were once vents for lava.\n\nPerhaps the most spectacular features on the Martian surface are the huge canyons located primarily in the equatorial regions. Valles Marineris, actually a system of canyons, extends for over 3000 mi (5000 km) along the equatorial belt. In places, the canyon complex is as much as 300 mi (500 km) wide and drops to more than 4 mi (6 km) below the surrounding surface. Dwarfing the Earth's Grand Canyon, Valles Marineris is comparable in size to the great East African Rift Valley. In general, the walls of the canyon are precipitous, have well-defined edges, and show evidence of slumping and landslide activity (Fig. 1).\n\n\nAn image from the Mars Global Surveyor resolves features as small as 20 ft (6 m) in a 10-km-wide portion of Coprates Chasma, which is located in the middle of Mars's vast
665705
theoretically it is, as we consider the earth to be a round sphere. it is not  a sphere though, thus gravity is less at the equator, or Himalaya, and more at the poles. one can calculate the difference if they want, if we know the exact distance from the center of the earth to the point where we are. going further we would have to take into account the lack or excess of mass due to the landscape (mountains, and/or lakes, canyons) at the area. going further, we would have to take into account the position of other planets, as their mass interferes. a bit further we have to take into account the speed of the rotation of the earth, as it is not constant, and a bit further, the angle of the rotation. a bit further, we have to add the mass that is being added as material from space falls on earth. the list can go on and on, one thing is certain: gravity exists, (well, maybe not inside my head,) but it is not exactly the same everywhere, and it is not exactly the same all the time
243900
It's about 1/6 earth gravity. (But don't forget to add in 1/6 of the spacesuit you have to wear, too.)
619259
I'm surprised nobody has mentioned this, but it takes a *lot* longer than a few hundred years (a few generations) to result in a new species.\n\nOn top of this, the environment for colonists on Mars would not be that radically different from the earth's environment.  Life support would have to maintain the same atmosphere, temperature, radiation, environments, the same food and water requirements etc.  Probably the main difference would be the much smaller gravity on Mars, which would badly deteriorate human muscles and skeletons unless some other measures were put into place.
210751
Print out the following site and put it together. There are ones for mars at NCAA site. \nBuckminster Fuller had several different ones. One had the continents as one big island, one had one unified ocean.\nNotice when a plane travels from say, LA to Japan, it first travels to Alaska. That is the shortest distance. This would be an arc on a flat map.
279846
Mars would be barren, but it has all kinds of features...\n\n*grabs blue moons to black holes, his sourse of power*\n\nAh!  Here we are!\n\nThe enormous Valles Marineris canyon system runs across half the planet.  Its like the grand canyon almost: a valley that was once beleived to have water flowing through it.\n\nOlympus Mons is the tallest known mountain, classified as a volcano.  It is about 3 times taller than mount everest!!!  However, its 20x wider than it is tall, so it is a fairly gentle walk\n\nId estimate the dry ice caps, made of carbon dioxide, would catch some attention.\n\nDemeos and phobos are so close to the planet, you can see them revolving around the planet 3 times a day.  Its a interesting sight!
88791
Do mean "difference" or "distance"?\n\nIf it's difference, well, Venus is the 2nd planet from the sun, Mars is the 4th planet from the sun, and Jupiter is the 5th planet from the sun.\n\nVenus is a rocky planet just slightly smaller than earth with a hot, dense, atmosphere.\nMars is a rocky planet just over half the diameter of earth with a cold, atmosphere with a pressure of about 1/10 that of earth.\nJupiter is a gas giant that could contain many earths.\n\nI'm guessing that your question has more to do with the distances between the orbits of the planets rather than the actual distances between the planets because the distance between the planets can vary greatly depending on where each is it's orbit.\n\nThe site linke below has the distances in astronomical units and kilometers (km) from the sun for the orbits of each planet.  Maybe from that you can figure out the answer to your question.
495064
You are making it needlessly hard on yourself.  The planet has the same mass as the earth, and someone on it weight the same as on earth, therefore the surface of the planet is the same distance from its center as the earth radius, i.e. this planet has the same dimension as earth.\nSo, the radius of the planet is 6,372.797 km, same as earth's.\nYou don't need to compute anything.  The orbital velocity of the planet has nothing to do with it.\nIf the weight was different, you only need to scale it remembering that the weight would vary as an inverse of the square of the radius.
293266
See in\nhttp://www.seds.org/nineplanets/nineplanets/nineplanets.html\nGood luck!
113446
The temperature on Mars ranges from -140 C to 20 C (-220 F to 68 F) with the mean temperature being -63 C (-81.4 F).  While it may get mildly warm during the summer, Mars tends to be bitterly cold most of the time.
478715
You need radius and distance\n\nEarth radius: 6,372 km\n\nMoon:\nDiameter: 3,472 km\nRadius: 1,736 km\nMean distance: 384,401 km (less radius of Earth = 378029 km)\n\nSun:\n\nDiameter: 1.392×10^6 km\nRadius: 6.96×10^5 km\nMean distance:149.6×10^6 km\n\nBy trigonometry, the angle is twice the inverse tangent of radius divided by the distance.\n\nMoon: 0.009032 radians (0.5175 degrees)\nMoon corrected for radius of Earth:\n0.009184 radians (0.5262 degrees)\nSun: 0.009305 radians (0.5331 degrees)\n\nNote These are mean values.  I calculated from the center of the Earth and the surface by subtracting the radius of Earth.  There are several numbers you can plug in from my sources.  I could not draw a diagram to explain my calculation due to the limits of Y!A.