IC 2118: 女巫头星云

IC 2118: 女巫头星云

ByNASA中文

2023年10月4日 IC 2118: The Witch Head Nebula Image Credit & Copyright: Abdullah Alharbi Explanation: Does this nebula look like the head of a witch? The nebula is known popularly as the Witch Head Nebula because, it is said, the nebula’s shape resembles a Halloween-style caricature of a witch’s head. Exactly how, though, can be a topic of imaginative speculation. What is clear is that IC 2118 is about 50 light-years across and made of gas and dust that points to — because it has been partly eroded by — the nearby star Rigel. One of the brighter stars in the constellation Orion, Rigel lies below the bottom of the featured image. The blue color of the Witch Head Nebula and is caused not only by…

星云IC 2118的食尸鬼

星云IC 2118的食尸鬼

ByNASA中文

2020年10月29日 The Ghoul of IC 2118 Image Credit & Copyright: Casey Good/Steve Timmons Explanation: Inspired by the halloween season, this telescopic portrait captures a cosmic cloud with a scary visage. The interstellar scene lies within the dusty expanse of reflection nebula IC 2118 in the constellation Orion, the Hunter. IC 2118 is about 800 light-years from your neighborhood, close to bright bluish star Rigel at Orion’s foot. Often identified as the Witch Head nebula for its appearance in a wider field of view it now rises before the witching hour. With spiky stars for eyes, the ghoulish apparition identified here seems to extend an arm many light-years long toward Orion’s hot supergiant star. The source of illumination for IC 2118, Rigel is just beyond this…