Mars is no vacation paradise. The temperatures fluctuate dramatically and average minus 80 degrees Fahrenheit. The surface is red dust punctuated by craters, canyons, and volcanoes. On the plus side, the atmosphere is extremely thin, comprising only about 1% of the density of Earth’s, and gravity is 60 percent lower, so you can finally dunk a basketball.With all of those challenges, Martian landers have still been able capture wind measurements — some gauging the cooling rate of heated materials when winds blow over them, others using cameras to image “tell-tales” that blow in the wind. Both anemometric methods have yielded valuable insight into the planet’s climate and atmosphere.If humans ever intend to go there, we'll need more data first.