Science Source Feb 2010
EN_90286391_0222
![Science Source Feb 2010](img/medium/arch1/dvd0114/18/EN_90286391_0222.jpg)
Pinwheel Galaxy (M101, NGC 5457) at 8th magnitude. This is a large, bright, spiral galaxy some 20 million light years away in the constellation of Ursa Major. M101 has a mass of three thousand million Suns and a diameter of approximately 200, 000 light years, around twice that of our own galaxy, the Milky Way. Its extremely narrow, far- flung spiral arms are dominated by huge clouds of glowing hydrogen, some of which are 3000 light years across.
2010-02-13
EAST NEWS
Science Source
Science Source
4h8910
0,59MB
28cm x 19cm przy 300dpi
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