How Fast Do Gases from Volcanic Eruptions Travel?
ES0906  Astronaut Photos

Astronauts on the space shuttle took these two photos, looking through the atmosphere toward sunset. Huge thunderclouds extend upward from the lower atmosphere in each image.

One of the photos was taken before the eruption of Mount Pinatubo and one was taken after the eruption.

11. What differences do you notice between the two photos? Which photo do you think shows evidence of aerosols in the upper atmosphere?

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