1.   But two decades ago, Viking landed, took pictures and soil samples and delivered a Martian weather report.

2.   Other data presented Tuesday included a Martian weather report.

3.   Some future Mars explorers will be devoted mainly to studying Martian weather.

4.   The most prominent features of Martian weather are raging dust storms and feverish whirlwinds.

5.   The spacecraft is programmed to make the first full-scale study of Martian weather.

6.   The spacecraft, called Mars Climate Orbiter, is programmed to make the first full-scale study of Martian weather.

7.   The Odyssey mission is intended to map the distribution of minerals and chemicals across the surface of Mars and provide daily Martian weather reports.