x
uploads/cygnus.jpg

cygnus n.1.【鳥類】天鵝屬。2.〔the Cygnus〕 【...

cylinder

Most astronomers are convinced of the existence of the so - called stellar black holes , which collapse out of single star and have masses up to 10 times that of the sun . a famous example of this kind of black holes is cygnus x - 1 . likewise , supermassive black holes , which can have the mass of billions of stars and sit in the centre of galaxies , are also believed to exist 一向以來,大部份天文學家都相信宇宙中存在著兩種黑洞,一種是由單顆恒星塌縮而成,質量比太陽大約十倍的恒星型黑洞,例如天鵝座- 1另一種是超重黑洞,這種黑洞位于星系核心,質量可達太陽數十億倍,例如我們的銀河系中心,就有一個名為人馬座a ,質量比太陽大300萬倍的黑洞。

The elegant selections for this year include : very large array in moonlight , the satellite rescue mission of space shuttle , north america nebula in cygnus , hong kong from space , comet halley in easter island , eagle nebula in serpens , and the supernova 1987a 選輯的十二幅珍貴天文圖片包括:月色下的甚大天線陣穿梭機拯救衛星任務天鵝座北美洲星云太空中所見的香港復活節島上的哈雷彗星巨蛇座鷹狀星云1987年所發現的超星等。

In modern radio astronomy , these radio celestial bodies are called “ discrete sources ? cassiopeia a , cygnus a and taurus a are some examples of discrete sources . the letter “ a “ represents a strong radio source 在現代的射電天文學中,這些射電天體稱作分立射電源,例如仙后座a ,天鵝座a和金牛座a等, a是代表強的射電源。

Over the next ten years , a new generation of telescopes will be launched into space more powerful than any before , they will peer into the cygnus constellation 在以后的10年內,將有比以往任何一代望遠鏡功能更強大的新一代天文望遠鏡給發射入太空,這些望遠鏡將深入探測天鵝星座。

The central bright star hd 226868 is the binary companion of the black hole , currently undergoing mass loss to cygnus x - 1 中心亮星hd226868與該黑洞組成一個雙星系統,目前其物質正被天鵝座x - 1吞噬。

This isosceles triangle is composed of vega in lyra , altair in aquila and deneb in cygnus 這個等腰三角形分別由天琴座主星織女天鷹座主星牛郎及天鵝座主星天津四所組成。

The brightest star in the constellation cygnus , approximately1 , 630 light - years from earth 天津四,天鵝星在天鵝座最亮的一顆恒星,距地球大約有1 , 630光年

Bright constellations : lyra , aquila , cygnus , scorpius and sagittarius 容易辨認的星座:天琴座天鷹座天鵝座天蝎座及人馬座

Cygnus x - 3 is a binary x - ray source located at a distance of 10kpc 天鵝座x - 3是一個距離約10千秒差距的雙重x射線源。

Image of cygnus x - 1 , the first stellar black hole candidate 天鵝座x - 1影像,可能是首個被發現的恒星狀黑洞。

Cygnus x - 1 is the oldest known case of a black hole candidate 天鵝座x - 1便是最早發現的懷疑黑洞。

Cygnus x-3 is a binary x-ray source located at a distance of 10kpc . 天鵝座X-3是一個距離約10千秒差距的雙重X射線源。