Planetary nebula. Hubble space telescope image of the Hubble 5 "butterfly" or bipolar planetary nebula,with its 2 prominent lobes. The gas is formed of material ejected from the star at the centre of the nebula. The lobes occur because a disk of dust (not seen here) circling this star channels the "wind" of particles from the star like the nozzle of a jet engine. The heat generated by this "wind" causes the two lobes to expand like a hot-air balloon. Hubble 5 lies 2200 light years away in the constellation of Sagittarius. Image taken by Hubble's Wide Field and Planetary Camera 2 on 9 September 1997 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / B.BALICK, U.WASHINGTON / STSCI / ESA / NASA |
Bildgröße: | 4094 px × 3437 px |
Modell-Rechte: | nicht erforderlich |
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