NGC 3918 is a bright planetary nebula in the constellation Centaurus, nicknamed the "Blue Planetary" or "The Southerner". It is the brightest of the far southern planetary nebulae. This nebula was discovered by Sir John Herschel in March 1834 …

NGC 3918是位於南天球高緯度區域 最明亮 的行星狀星雲，可使用小型望遠鏡觀測。 該星雲由英國天文學家 約翰·赫歇爾 發現於1834年3月。 該星雲在望遠鏡中所見到其接近圓形的卵形外觀直徑約為8到10 角秒，但更深入觀測影像的直徑則是19到20角秒。 更讓人驚訝的是它的美麗藍色外觀相當近似 航海家2號 於1989年拍攝的 海王星 影像。 光譜觀測資料顯示NGC 3918正以每秒17±3.0公里的速度接近地球，而星雲本身則以每秒24公里的速度向外擴張。 中心恆星的亮度為肉眼不 …

1997年12月17日 · NGC 3918 is in the constellation Centaurus and is about 3,000 light-years from us. Its diameter is about 0.3 light-year. It shows a roughly spherical outer envelope but an elongated inner balloon inflated by a fast wind from the …

ngc 3918是位于南天球高纬度区域最明亮的 行星状星云 ，可使用小型望远镜观测。 该星云由英国天文学家 约翰·赫歇尔 发现于1834年3月。 该星云在望远镜中所见到其接近圆形的卵形外观直径约为8到10 角秒 ，但更深入观测影像的直径则是19到20角秒。

1998年3月19日 · Planetary Nebula NGC 3918 Studying images of proto-planetary nebulae is important to understanding the process of star death. A star begins to die when it has exhausted its thermonuclear fuel - hydrogen and helium.

2023年5月17日 · This dramatic image from the NASA/ESA Hubble Space Telescope shows the planetary nebula NGC 3918, a brilliant cloud of colourful gas in the constellation of Centaurus, around 4900 light-years from Earth. In the center of the cloud of gas, and completely dwarfed by the nebula, are the remnants of a red giant.

2018年8月24日 · This dramatic image from the NASA/ESA Hubble Space Telescope shows the planetary nebula NGC 3918, a brilliant cloud of colorful gas in the constellation of Centaurus, around 4,900 light-years from Earth. In the center of the cloud of gas, and completely dwarfed by the nebula, are the dying remnants of a red giant.

1997年12月17日 · NGC 3918 is in the constellation Centaurus and is about 3, 000 light-years from us. Its diameter is about 0.3 light-year. It shows a roughly spherical outer envelope but an elongated inner balloon inflated by a fast wind from the hot central star, which is starting to break out of the spherical envelope at the top and bottom of the image.

2010年8月2日 · This dramatic image from the NASA/ESA Hubble Space Telescope shows the planetary nebula NGC 3918, a brilliant cloud of colourful gas in the constellation of Centaurus, around 4900 light-years from Earth. In the centre of the cloud of gas, and completely dwarfed by the nebula, are the dying remnants of a red giant.

ngc 3918是位于南天球高纬度区域最明亮的行星状星云，可使用小型望远镜观测。 该星云由英国天文学家 约翰·赫歇尔 发现于1834年3月。 该星云在望远镜中所见到其接近圆形的卵形外观直径约为8到10 角秒 ，但更深入观测影像的直径则是19到20角秒。