1. Contrary to what you might have learned from Star Trek and Star Wars, planets do not have a single climate.
So it's not really reasonable to say "Winnipeg is as cold as the surface of Mars", unless you're going to specify where on Mars you are talking about. And when in the Martian year you are talking about it. Geekquinox, the blog that first started the current trend of comparing Canada to the Red Planet, was looking at the afternoon temperature (sans wind chill) in Winnipeg on December 31st (-31 degrees Celsius) and daily temperatures collected in November and December by the Curiosity Rover, at Gale Crater, Mars (lowest afternoon high: -31 degrees Celsius). This comparison leaves out the fact that Gale Crater is in the Martian tropics. In the mid-latitudes, however, the average temperature is closer to -50 degrees Celsius. Also, Mars has huge temperature swings from day to night. On the same day that Geekquinox reported a monthly average high at Gale Crater of -31 C (Sol 486) the monthly average low was -110 C.

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