甘姆星雲
The Gum Nebula<br />
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<img src="http://i16.tinypic.com/34sf7o0.jpg" border="0" onclick="zoom(this)" onload="attachimg(this, 'load')" alt="" /><br />
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影像版權與提供: Axel Mellinger <br />
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<font color="navy">Explanation:</font><br />
Named for Australian astronomer Colin Stanley Gum (1924-1960), The Gum Nebula is so large and close it is actually hard to see. In fact, we are only about 450 light-years from the front edge and 1,500 light-years from the back edge of this cosmic cloud of glowing hydrogen gas. Covered in this 41 degree-wide mosaic of H-alpha images, the faint emission region is otherwise easy to lose against the background of Milky Way stars. The complex nebula is thought to be a supernova remnant over a million years old, sprawling across the southern constellations Vela and Puppis. Sliding your cursor over this spectacular wide field view will reveal the location of objects embedded in The Gum Nebula, including the Vela supernova remnant. <br />
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<font color="navy">說明:</font><br />
雖然甘姆星雲很大又很近，但實際上卻很難看到它。 因為 我們正處於這個充滿熾熱氫氣的發光區域，前緣距離我們450光年，後端距離我們1,500光年。 這張涵蓋了40度的H-alpha的影像，很微弱的 發光區域很容易就因為本銀河系的星光所掩蓋。 散佈 在南天星座的船尾座 (Puppis)和船帆座 (Vela)附近的天區，這 複雜的區域被認為是超過百萬年前的 超新星爆炸的遺跡 澳洲的天文學家Colin Stanley Gum (1924-1960)對這個星雲命名，將你的滑鼠指向這壯麗的照片可以顯示出藏在星雲內的星體，包含 船帆座 (Vela)超新星爆炸的遺跡。 <br />
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<font size="2">資料來源: Scientific American<br />
Department of Physics, NCKU</font>