![On Earth, gravity-driven buoyant convection causes a candle flame to be teardrop-shaped and carries soot to the flame's tip, which makes it yellow. In microgravity, where convective flows are absent, the flame is spherical, soot-free and blue.](https://www.nasa.gov/wp-content/uploads/2023/03/candle-flames.gif)
Candle Flame – 1g vs Microgravity
On Earth, gravity-driven buoyant convection causes a candle flame to be teardrop-shaped and carries soot to the flame's tip, which makes it yellow. In microgravity, where convective flows are absent, the flame is spherical, soot-free and blue.
Image Credit: NASA
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https://www.nasa.gov/image-detail/candle-flames-3/
Image CreditNASA
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