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Please update to reflect the success of India lower down the article in the Exploration section as the one of the countries to have sent a mission and also the first Asian country and the first to achieve orbit on first mission - you have identified the satellite in the initial paragraphs but not in the exploration body where the additional detail might best be inserted.
Please update highest temperature on Mars. While the conservative figures quoted are from Nasa, there are other Nasa sites especialy rover site which quotes much higher numbers. Would somebody please further research and update. A quote from nasa rover source at : http://marsrover.nasa.gov/spotlight/20070612.html
Change min-max surface temperature. Min is -153 °C and the max is 20 °C according to NASA. Source: http://quest.nasa.gov/aero/planetary/mars.html
Incorrect conversion of summer max temps in S. Hemisphere : 30C <--> 54F which is correct?
"Aluminum" really? Step it up America.
The 47-year cycle of Mars was observed by the Ancients
The 47-year cycle of Mars: after 47 years - 22 synodic periods of 780 days each - Mars returns to the same position among the stars and is in the same relationship to the Earth and Sun. The ancient Mesopotamians discovered this cycle. 
A few notes on the article
Just thought I'd post a few notes about this article based upon what an ordinary guy might think. I know an article like this can't be dumbed down to a six grader's level, but some things should be more accessible for the non-technical reader.
In the Lede: 1) One thing I would include is the closest distance from Earth as I'm sure that is one of the things people specifically come here to find out; 2) Is it possible to put the equator on the lede photo? Most people who look at it will assume that the equator is right in the middle (along with the Prime Meridian) and not realize that the planet is tilted; 3) I also think it should be noted that the planet is called Mars because the planet is red, which reminded the ancients of blood, which is why the named it after the God of War; 4) As for the point about Olympus Mons, when you state something is the second highest, it instantly raises the question (it does not "beg the question"): what's the highest? (Also, how deep is the lowest point?) 5) While I realize it's customary to give distances using the metric system, would it be out of place to give the Imperial measurements also?
Surface geology: shouldn't "Mya" be defined when first used?
Hydrology: Currently, there is this sentence: "The volume of water ice in the south polar ice cap, if melted, would be sufficient to cover the entire planetary surface to a depth of 11 meters (36 ft)" How is that possible? Does that mean if you stood atop of Olympus Mons you would still be under water? How tall is the ice cap?
Volcanoes: it wouldn't hurt to note the location of Olympus Mons on the small map.
In culture: 1) If you don't put the reason for Mars' name in the lede, then put it here. 2) The paragraph that begins with "Early in December 1900," appears to be a block quote, but because of the placement of the illustration it looks just like another paragraph. Either the picure should be moved or the use of the large quotation marks used to make this clear.
Astronomy on Mars: The caption under the photo reads, "Comet Siding Spring to pass near Mars on October 19, 2014" Can somebody change that to past tense?
- I think your feedback is very valuable. I too would like to see these points addressed. Thank you. BatteryIncluded (talk) 02:28, 3 April 2015 (UTC)
- Mostly good points, though adding imperial units to articles can get excessive, and BCE/CE is normal in scientific articles. (Actually, BP may be more common, but changing 1930 to 20 BP would be inappropriate.) — kwami (talk) 02:32, 3 April 2015 (UTC)
- This article is not just scientific. The sections using BCE/CE are historical and cultural. I think those are fine the way they are. Scarlettail (talk) 02:55, 3 April 2015 (UTC)
"Atmosphere Scale Height" Earth's atmosphere is closer to 8km than 6km. Also, Mars dust is notably homogenous in the atmosphere with a similar scale height to the gaseous part. — Preceding unsigned comment added by 188.8.131.52 (talk) 00:32, 5 May 2015 (UTC)
Semi-protected edit request on 5 May 2015
Please remove the mean anomaly. Mean anomaly changes constantly. It is unhelpful (and incorrect) to list a static value. — Preceding unsigned comment added by 184.108.40.206 (talk) 14:26, 5 May 2015 (UTC)