2019年11月5日 · This nebula has many colors. Astronomers know that the orange color is hydrogen, the red color in the nebula is sulfur, and the green color is oxygen. When you think …

2019年10月3日 · A typical diffuse nebula is a few hundred light-years across. (NGC 2264 shown; see also the Horsehead Nebula) Planetary Nebulae. Planetary nebulae are shells of gas …

The biggest Nebula ever discovered is the Tarantula Nebula. At first, it was thought to be a star, but later on, in 1751, it got its proper recognition. The Tarantula Nebula has an apparent …

2019年10月2日 · Home » General » Crab Nebula. October 17, 2019 October 2, 2019. NGC 1952 Crab Nebula M 1.

2019年10月3日 · Photo: National Optical Astronomy Observatories (95k jpg) NGC 6611 M 16. RA 18:19, Dec -13:47 ()Distance: 7000 ly

2020年8月17日 · The Red Rectangle Nebula. The Red Rectangle Nebula, also known as HD 44179, is a protoplanetary nebula located at around 2.3-kilo light-years away from us. It has an …

2019年11月14日 · Up until the early 1900’s, it was believed that the Andromeda was a nebula within the Milky Way galaxy. In fact, it was generally believed that all of the universe was …

2019年10月2日 · The Orion Nebula is the nearest star formation region to the Earth and consequently particularly well studied. Despite this, star formation is not all that well …

2019年10月2日 · The dark nebula that forms the Horsehead itself is known as Barnard 33 (B 33). The red background is the emission nebula IC 434, the reflection nebula NGC 2023 and the …

2020年9月10日 · Corona Australis Nebula. The Corona Australis Nebula is a bright reflection nebula, located at around 420 light-years away from us. This nebula is formed by several …