Star Trails and Tajinastes

Astronomy Picture of the Day · 2010-06-18 · NASA (public domain)

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Star Trails and Tajinastes — APOD for 2010-06-18

What bizarre planet do these alien creatures inhabit? It's only planet Earth , of course. In this well-composed scene, the sky is filled with star trails around the north celestial pole. A reflection of the Earth's daily rotation on its axis , star trails are familiar to photographers who fix their camera to a tripod and make long exposures of the night sky. But the imposing forms gazing skyward probably look strange to many denizens of Earth . Found on the Canary Island of Tenerife, they are red tajinastes , rare flowering plants that grow to a height of up to 3 meters. Hidden among the rocks of the volcanic terrain, tajinastes bloom in spring and early summer and then die after their seeds mature. On the distant horizon, below and left of the celestial pole, lies the Teide volcano .

Astronomy Picture of the Day for 2010-06-18 — image & explanation courtesy of NASA (public domain), mirrored at Tukuk-OS for reading and search convenience.

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