Talk:Mars

Living On Mars

Living on the planet mars is not possible even though it is not very close to the sun. This is not possible as its water is too salty and too acidic for humans or animals and plants to survive on. —Preceding unsigned comment added by 90.206.240.138 (talk) 16:00, 16 March 2008 (UTC)

There are many other reasons as well: 1)Water cannot not exist in a liquid state on Mars 2)There is virtually no ozone layer-the UV would kill you 3)There is no magnetic field to protect from Cosmic Rays —Preceding unsigned comment added by Plumwood (talk • contribs) 20:31, 6 April 2008 (UTC)

A Ecosystem Section Should be Added

I think this plant especially; and all other planets should have ecosystem sub-headings on the main page. Past, present, future or theoretical. —Preceding unsigned comment added by Rdailey1 (talk • contribs) 13:57, 24 March 2008 (UTC)

Martian Fossils?

When i looked up mars life i read an article that said and asteriod from mars came to earth. The scientists said that they saw strange worm like structures and crab like formations on it. I just thought it was cool what do you think?

See Life on Mars. IMO, until there's good evidence, it's safest to assume these are mineral formations. — kwami (talk) 23:59, 1 April 2008 (UTC)

mass of mars

circumference is circa 0.5 earth

mass is only 0.155 earths?

how does that work? —Preceding unsigned comment added by 118.90.67.148 (talk) 08:21, 4 April 2008 (UTC)

Mars has a Radius (R) of 3,396.2km (3.39/6.37=0.53 that of Earth)
Volume of a sphere: (4/3)*pi*(R^3) = 1.6E+11 (so 1.6/10.8=0.15 that of Earth)
Given that Mars has a density of only 3.9g/cm^3 and Earth has a density of 5.5g/cm^3, Mars has a mass of (1.6E+11)*3.9 = 6.4E+11 (or only 6.45/59.7=0.1 that of Earth) -- Kheider (talk) 17:07, 4 April 2008 (UTC)

Mars like Earth?!

"In addition to its geographical features, Mars’ rotational period and seasonal cycles are likewise similar to those of Earth."

This should be corrected! Mars' seasonal cycles are not at all like the Earth. Its year is 2 Earth years long, thus its seasons last twice as long. In addition, its orbit is much more elliptical than the Earths. Unlike the situation for the Earth, Mars' distance from the Sun does influence its seasons. This causes much more severe seasonal temperature changes than on the Earth. 20:39, 6 April 2008 (UTC)

Image doubts

The image comparing the sizes of the Earth, Mars, Venus, and Mercury seems inconsistent with the radius. It is said that the radius of Mars is approximately half that of Earth, yet in the image, they seem to be of similar size. Is there something I am missing? —Preceding unsigned comment added by Candlefrontin17 (talk • contribs) 02:13, 11 April 2008 (UTC)