Die Ringe des Saturn, 2017

Saturn’s graceful lanes of orbiting ice – its iconic rings – wind their way around the planet to pass beyond the horizon in this view from NASA’s Cassini spacecraft. The image was taken in green light with the Cassini spacecraft wide-angle camera on Aug. 12, 2017. The view was obtained at a distance to Saturn of approximately 935,000 kilometers. [Ausschnitt aus dem Originalkommentar]
Quelle: NASA

Advertisements
Die Ringe des Saturn, 2017

Sonnenschichten, 2017

This sequence of images shows the Sun from its surface to its upper atmosphere, all taken at about the same time on Oct. 27, 2017. The first shows the surface of the Sun in filtered white light; the other seven images were taken in different wavelengths of extreme ultraviolet light. Note that each wavelength reveals somewhat different features. They are shown in order of temperature from the first one at 6,000 degree C. surface, out to about 10 million degrees C. in the upper atmosphere. Yes, the Sun’s outer atmosphere is much, much hotter than the surface. Scientists are getting closer to solving the processes that generate this phenomenon. [Originalkommentar]

Quelle: NASA

Sonnenschichten, 2017