Star Trails and Lightning over the Pyrenees

Astronomy Picture of the Day · 2022-09-19 · NASA (public domain)

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Star Trails and Lightning over the Pyrenees — APOD for 2022-09-19

The beauty in this image comes in layers. On the bottom layer is the picturesque village of Manlleu in Barcelona , Spain . The six-minute exposure makes car lights into streaks. The next layer is a mountain -- Serra de Bellmunt -- of Europe's famous Pyrenees . Next up is a tremendous lightning storm emanating from a classically-shaped anvil cloud . The long exposure allowed for the capture of many intricate lightning bolts . Finally, at the top and furthest in the distance are stars . Here, the multi-minute exposure made stars into trails . The trailing effect is caused by the rotation of the Earth, and the curvature of the trails indicates their distance from the north spin pole of the Earth above. Taken after sunset in early June, the lightning storm soon moved off. The stars, though, will continue to circle the pole for as long as the Earth spins -- surely billions of years into the future .

Astronomy Picture of the Day for 2022-09-19 — image & explanation courtesy of NASA (public domain), mirrored at Tukuk-OS for reading and search convenience.

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