Geminidi

Il cielo sopra di noi: Viaggio attraverso il cielo stellato ad occhio nudo e con il telescopio

Il mio primo libro, una guida completa sull’osservazione del cielo ad occhio nudo e con il telescopio. Imparerete le nozioni base di astronomia, come orientarvi nel cielo stellato, a riconoscere le costellazioni, a usare il telescopio e molto altro ancora.

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NGC 289: Swirl in the Southern Sky

15/10/2021

About 70 million light-years distant, gorgeous spiral galaxy NGC 289 is larger than our own Milky Way. Seen nearly face-on, its bright core and colorful central disk give way to remarkably faint, bluish spiral arms. The extensive arms sweep well over 100 thousand light-years from the galaxy's center. At the lower right in this sharp, telescopic galaxy portrait the main spiral arm seems to encounter a small, fuzzy elliptical companion galaxy interacting with enormous NGC 289. Of course spiky stars are in the foreground of the scene. They lie within the Milky Way toward the southern constellation Sculptor.