Stars, Sprites, Clouds, Auroras

Astronomy Picture of the Day · 2015-02-04 · NASA (public domain)

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Stars, Sprites, Clouds, Auroras — APOD for 2015-02-04

What are those red streaks in the sky? While photographing unexpected auroras over a distant thunderstorm, something extraordinary happened: red sprites . This brief instance of rarely imaged high-altitude lightning flashed so bright that it was witnessed by several people independently. Pictured over Minnesota , USA in May 2013, these red sprites likely followed an extremely powerful low-altitude conventional lightning bolt. Captured in the featured frame are a house and electrical pole in the foreground, thick clouds in the lower atmosphere , a lightning storm on the horizon, distant red sprites and green aurora in the upper atmosphere, and distant stars from our local neighborhood of the Milky Way Galaxy . The spectacular image is thought to be only the second known case of sprites and auroras photographed together, and possibly the first in true color. Follow APOD on: Facebook , Google Plus , or Twitter

Astronomy Picture of the Day for 2015-02-04 — image & explanation courtesy of NASA (public domain), mirrored at Tukuk-OS for reading and search convenience.

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