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.
2006 June 30
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.
2006 June 30
說明: 在南天的烏鴉座 (Corvus)內，離我們大約六千萬光年遠的二個大型星系發生了碰撞。在這種耗時數十億年的冗長事件中，這二個星系(NGC 4038和NGC 4039)內的恆星卻不會發生互撞，只有它們巨大的分子雲氣和塵埃雲會受到影響，因而觸發一系列猛爆的恆星形成活動。這幅涵蓋大約五十萬光年天區的壯麗影像，呈現了新誕生的星團以及被重力潮汐力所拋出的長條狀物質。所造成的彎曲長條構造，讓這對星系獲得觸鬍星系 (the Antennae)的暱稱。在這幅此區域的深空影像裡，也可以見到上方觸鬍弧頂端的潮汐矮星系NGC 4028S，它是由潮汐臂物質所聚成的星系。
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry Bonnell
(USRA)
NASA Web Site Statements, Warnings, and
Disclaimers
NASA Official: Jay Norris.
Specific rights apply.
A service of:
EUD at
NASA /
GSFC
& Michigan Tech. U.