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In this example
Messier had no idea of the significance of his discovery at the time
As NGC 6814 is a very active galaxy
An image of Saturn's glorious rings in stunning black and white
it would be one of the brightest stars in the sky were it not largely obscured by foreground dust clouds
Dust Devil Trails Size:63" x 42" (160 cm x 107 cm) In this exampleThis high resolution picture from the HiRISE camera on board the Mars Reconnaissance Orbiter shows twisting dark trails criss crossing light colored terrain on the Martian surface. Newly formed trails like these had presented researchers with a tantalizing mystery but are now known to be the work of miniature wind vortices known to occur on the red planet, in other words Martian dust devils. Such spinning columns of rising air heated by the warm
