StarTalk Radio Things You Thought You Knew – Head in the Clouds
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Apr 8, 2025 Get ready to drift through the whimsical world of twilight, where Neil deGrasse Tyson and Chuck Nice unveil the true nature of civil, nautical, and astronomical phases. They'll debunk common myths and reveal how locations like Alaska bask in perpetual twilight. Then, dive into the science behind cloud formation and explore how temperature and humidity influence weather phenomena. Finally, uncover the chilling implications of climate change on coastlines and ponder the quest for extraterrestrial life in the watery depths of Mars and Europa.
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Cloud Formation
- Clouds form when rising, warm, moist air cools and reaches 100% relative humidity.
- This causes water vapor to condense into visible droplets.
Conditions Preventing Clouds
- Two ways prevent cloud formation: low initial humidity or descending air.
- Descending air warms, preventing condensation.
Fog and Cloud Types
- Fog is simply a cloud formed at ground level due to cooling air reaching dew point.
- Vigorous cloud formation leads to cumulus, then cumulonimbus clouds with rain.