Earth Observatory Science Earth Observatory Australia’s Cloudy Beauty Earth Earth Observatory Image of the Day EO Explorer Topics All Topics Atmosphere Land Heat & Radiation Life on Earth Human Dimensions Natural Events Oceans Remote Sensing Technology Snow & Ice Water More Content Collections Global Maps World of Change Articles Notes from the Field Blog Earth Matters Blog Blue Marble: Next Generation EO Kids Mission: Biomes About About Us Subscribe 🛜 RSS Contact Us Search Fog fills networks of river valleys in eastern Victoria in an image captured by the MODIS (Moderate Resolution Imaging Spectroradiometer) on NASA’s Terra satellite at 8:19 a.m. local time (22:19 Universal Time) on May 11, 2026. NASA Earth Observatory / Lauren Dauphin It’s autumn in the Southern Hemisphere, which means it’s fog season in the Victorian Alps. NASA’s Terra satellite captured this view of morning fog filling valleys in several national parks across the mountains of eastern Victoria in May. As nights lengthen with the season, the atmosphere has more time to cool and approach the dew point—the temperature at which the air becomes saturated and water vapor can condense into radiation fog. Because cold air is denser than warm air, it sinks and…
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Australia’s Cloudy Beauty
Source: NASA JPL — US Government, Public Domain