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20.9.18

Claude Monet - "Mer agitée à Étretat" - Peinture impressionniste

Mer agitée à Étretat, par Claude Monet
"Mer agitée à Étretat"
Huile sur toile
81 x 100 cm
1883

Musée des Beaux-Arts de Lyon, France

Poisson paradis - Image du jour - 20-09-2018

Un « poisson paradis » (Macropodus opercularis), de bleu vêtu et paré de rouge écarlate. (définition réelle 2 184 × 1 596)
Un « poisson paradis » (Macropodus opercularis), de bleu vêtu et paré de rouge écarlate

André Karwath aka

18.9.18

Salt, Pepper, and Ice - Astronomy picture of the day - 2018 September 18

Salt, Pepper, and Ice 
Video Credit & Copyright: Maroun Habib (Moophz)
Explanation: There's a "camera" comet now moving across the sky. Just a bit too dim to see with the unaided eye, Comet 21P / Giacobini-Zinner has developed a long tail that makes it a good sight for binoculars and sensitive cameras. The movement of the Comet 21P on the sky was captured last week in the featured time-lapse video compressing 90 minutes into about 2.5 seconds. What might seem odd is that the 21P's tail is not following the comet's movement. This is because comet tails always point away from the Sun, and the comet was not moving toward the Sun during the period photographed. Visible far in the background on the upper left is the Salt & Pepper star cluster,M37, while the bright red star V440 Auriga is visible just about the frame's center. This 2-km ball of dust-shedding ice passed its nearest to the Sun and Earth only last week and is now fading as it crosses into southern skies. Comet 21P should remain visible, however, and photogenic to stabilized cameras, for another month or so.

La nébuleuse de la Rosette - Image du jour - 18-09-2018

La nébuleuse de la Rosette, dans la constellation de la Licorne. (définition réelle 5 388 × 3 777*)
La nébuleuse de la Rosette, dans la constellation de la Licorne.

17.9.18

16.9.18

13.9.18