Astronomy Picture of the Day
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
August 3, 1998
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
August 3, 1998
說明: M44是個很顯眼的疏散星團。這個常見名稱包括鬼宿星團 (Praesepe) 和 "蜂窩星團" (the Beehive)的星團，是少數肉眼可見的疏散星團之一。 在伽利略用早期的望遠鏡分辨出上面影像所呈現的這些星團藍色亮星之前， M44被誤認是一個星雲。 大約形成於四億年前的M44，比大多數的其他疏散星團大且老。鬼宿星團 的距離大約是580光年，大小則有10光年， 透過高倍率的望遠鏡， 可以分辦出其中數百顆成員星。
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry
Bonnell (USRA)
NASA Technical Rep.:
Jay Norris.
Specific rights apply.
A service of:
LHEA
at
NASA/
GSFC
&:
Michigan Tech. U.