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Keyword: wind
![Рождение солнечного ветра](https://images.astronet.ru/pubd/2005/07/11/0001207179/solwind_soho_big.preview.jpg)
8.02.1999
Winds of fast particles blow out from the Sun, but why? Astronomers came a step closer to answering this question recently by making detailed observations of the high-speed wind source with the space-borne Solar and Heliospheric Observatory (SOHO).
![Марс: трехмерные дюны](https://images.astronet.ru/pubd/2001/09/13/0001170676/dunes3d_mgs_c1.preview.jpg)
15.08.2001
Get out your red/blue glasses and treat yourself to this dramatic 3-D view of sand dunes on Mars! The field of undulating dunes is found in Nili Patera, a volcanic depression in central Syrtis Major, the most prominent dark feature on the Red Planet.
![Ветер на Марсе](https://images.astronet.ru/pubd/2004/08/16/0001199277/marswind_mgs_big.preview.gif)
12.01.1999
Wind erosion has been discovered on Mars. Pictures of regions surrounding the north polar cap show sand dunes covered in frost. In places, however, this frost has been eroded to uncover the dark sand underneath.
![Марсианские ярданги](https://images.astronet.ru/pubd/2000/12/21/0001163949/yardangs_mgs_big.preview.jpg)
14.11.2000
OK, fans of classic science fiction might be disappointed. The yardangs are not barsoomian warriors in a newly discovered Edgar Rice Burroughs tale of adventure and conquest on the Red Planet. In fact yardangs, geologists' term for narrow, wind-eroded ridges, are common land features in the desert regions of planet Earth.
![Эоловый Марс](https://images.astronet.ru/pubd/2006/11/10/0001217547/activedunes_mgs_big.preview.gif)
2.02.2000
Mars' atmosphere is relatively thin, still when martian winds blow they weather and shape its surface. Like familiar aeolian features on Earth, this field of dunes within Mars' Rabe crater exhibits graceful undulating ridges which can shift as windblown material is deposited on the dunes' windward face and falls away down the steeper leeward slopes.
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