Copyright:
原文:
The center of our Galaxy is a busy place. In visible light, much of the Galactic Center is obscured by opaque dust. In infrared light, however, dust glows more and obscures less, allowing nearly one million stars to be recorded in the featured photograph. The Galactic Center itself appears on the left and is located about 30,000 light years away towards the constellation of the Archer (Sagittarius). The Galactic Plane of our Milky Way Galaxy, the plane in which the Sun orbits, is identifiable by the dark diagonal dust lane. The absorbing dust grains are created in the atmospheres of cool red-giant stars and grow in molecular clouds. The region directly surrounding the Galactic Center glows brightly in radio and high-energy radiation, and is thought to house a large black hole. Follow APOD on: Facebook, Google Plus, or Twitter
中文翻譯:
🌌 我們的銀河系中心是一個繁忙的地方。在可見光下，銀河中心的大部分被不透明的塵埃所遮蔽。然而，在紅外光下，塵埃會發光，遮蔽的效果減少，讓我們能夠記錄到近一百萬顆星星。銀河中心本身位於左側，距離地球約 30,000 光年，面向射手座（Sagittarius）星座。我們的銀河系的銀河平面，亦即太陽公轉的平面，通過那條黑暗的對角塵埃帶可以明顯辨認出來。這些吸收塵埃顆粒是在冷紅巨星的氣氛中形成，並在分子雲中增長。銀河中心周圍的區域在無線電和高能輻射中發出亮光，並被認為擁有一個大黑洞。
#銀河系 #銀河中心 #紅外光 #塵埃 #星星 #黑洞 #射手座 #科學探索 #天文學 #宇宙 #APOD #太空 #香港天文 #星空探索
來源:NASA每日圖片
