Andromeda and Sprites over Australia

Astronomy Picture of the Day · 2025-12-16 · NASA (public domain)

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Andromeda and Sprites over Australia — APOD for 2025-12-16

What’s happening over that tree? Two very different things. On the left is the Andromeda galaxy , an object that is older than humanity and will last billions of years into the future. Andromeda ( M31 ) is similar in size and shape to our own Milky Way Galaxy . On the right is a red sprite , a type of lightning that lasts a fraction of a second and occurs above violent thunderstorms . Red sprites were verified as real atmospheric phenomena only about 35 years ago. The tree in the center is a boab , which may live for as long as a thousand years. Boab trees grow naturally in Australia and Africa and are known for being able to store large amounts of water: up to 100,000 liters. The featured image was captured last month near Derby in Western Australia .

Astronomy Picture of the Day for 2025-12-16 — image & explanation courtesy of NASA (public domain), mirrored at Tukuk-OS for reading and search convenience.

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