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.
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. |



