ESO's Very Large Telescope with Laser Beam Space Wallpaper

ESO's Very Large Telescope with Laser Beam
A glowing laser shines forth from the European Southern Observatory’s Very Large Telescope, creating an artificial star 90 km above the surface of the Earth used to fine-tune the telescope's optics.
(Image: © ESO/G. Hüdepohl (www.atacamaphoto.com))

A glowing laser shines forth from the European Southern Observatory’s Very Large Telescope, creating an artificial star 90 km above the surface of the Earth, a device used to fine-tune the telescope's optics in this cool space wallpaper.

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