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APOD

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

A volcano is shown with its peak in the midst of purple clouds. Lightning appears to come out of the top of the volcano in multiple paths into the upper sky. Please see the explanation for more detailed information.

Lightning over the Volcano of Water

Explanation: Have you ever watched a lightning storm in awe? You're not alone. Details of what causes lightning are still being researched , but it is known that inside some clouds, internal updrafts cause collisions between ice and snow that slowly separate charges between cloud tops and bottoms. The rapid electrical discharges that are lightning soon result. Lightning usually takes a jagged course, rapidly heating a thin column of air to about three times the surface temperature of the Sun . The resulting shock wave starts supersonically and decays into the loud sound known as thunder . On average, around the world, about 6,000 lightning bolts occur between clouds and the Earth every minute. Pictured in July 2019 in a two-image composite, lightning stems from communication antennas near the top of Volcán de Agua (Volcano of Water) in Guatemala .

Sky Surprise: What picture did APOD feature on your birthday? (post 1995)

Date July 27, 2025
Credit Image Credit: Sergio Montúfar ( Pinceladas Nocturnas )
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.