标签: ring galaxy

霍格天体: 近乎完美的环状星系

2024年2月18日 Hoag’s Object: A Nearly Perfect Ring Galaxy Image Credit: NASA, ESA, Hubble; Processing: Benoit Blanco Explanation: Is this one galaxy or two? This question came to light in 1950 when astronomer Arthur Hoag chanced upon this unusual extragalactic object. On the outside is a ring dominated by bright blue stars, while near the center lies a ba...

M94: 双环星系

2023年6月7日 M94: A Double Ring Galaxy Image Credit & Copyright: Brian Brennan Explanation: Most galaxies don’t have any rings of stars and gas — why does M94 have two? First, spiral galaxy M94 has an inner ring of newly formed stars surrounding its nucleus, giving it not only an unusual appearance but also a strong interior glow. A leading ori...

螺旋星系NGC 1512的内环

2022年5月8日 Spiral Galaxy NGC 1512: The Inner Rings Image Credit: NASA, ESA, Hubble Space Telescope Explanation: Most galaxies don’t have any rings — why does this galaxy have two? To begin, the bright band near NGC 1512’s center is a nuclear ring, a ring that surrounds the galaxy center and glows brightly with recently formed stars. Most sta...

环状星系AM 0644-741

2021年7月28日 Ring Galaxy AM 0644-741 Image Credit: NASA, ESA, Hubble, HLA; Processing: Jonathan Lodge Explanation: The rim of the large blue galaxy at the right is an immense ring-like structure 150,000 light years in diameter composed of newly formed, extremely bright, massive stars. AM 0644-741 is known as a ring galaxy and was caused by an immense galaxy co...