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
See Explanation.  Clicking on the picture will download
 the highest resolution version available.

影像版權與提供: Daniel Verschatse (Antilhue Observatory)

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,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。

明日的圖片: a black hole paradox

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