Transcription: On Mars, because of the absence of large bodies of water and of massive cloud covers, the weather doesn't vary much from day to day. Like a remote weather station on Earth, Viking's meteorology instrument measures Mars' atmospheric pressure, temperature, wind speed and wind direction. Temperatures range from minus 122 degrees Fahrenheit just after dawn to minus 22 degrees in the mid-afternoon. Light winds from the east in the late afternoon change to light winds from the southwest after midnight. Maximum wind speed is 15 miles per hour. But in the early summer, the heating of dust particles in ...
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