Why is Mercury brown or red?

Answer 1

No, Mercury is largely grey, because of the composition of its surface. You can see this via the following links:

http://rst.gsfc.NASA.gov/Sect19/Sect19_7.html

http://blogs.discovermagazine.com/badastronomy/2008/10/29/the-colors-of-mercury/

http://www.sciencedaily.com/releases/2008/01/080123085313.htm

Mars is a reddish-brown because its surface is rich in iron as can be seen via the following links:

http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=31029

http://www.donaldedavis.com/PARTS/MARSCLRS.html

Answer 2

Mars is the "red" planet, caused by oxidation (rust) on its surface.

Answer 3

The red spots you see on Mercury are formed by craters on the surface of the planet. The way you see Mercury can be affected by the composition of the rocks at the surface.

Answer 4

Mercury is brown and red beacuse someone crapped on it and cut themselves

Answer 5

Some people think it is because of an alien battle but scientists say its because of cemicals found on the planet.