翡翠故乡的恋情 – 大衛隨想錄 David Caprice

翡翠故乡的恋情

Aug 30th, 2009 • Category: 翡翠乡情

美丽的Toba湖, Sumatra, Indonesia

印度尼西亚Bali岛景色

翡翠故乡的恋情

— 心灵永怀东南亚家园
— 黄达维(David C. Huang)，2009.07

清凉泉水哗哗流下，
奇花异草布满山岗，
原始森林百鸟在欢唱，
那是我永远难忘的故乡。

美丽梦幻的Toba湖，
传奇动人的爱情故事，
我们留下的青春足迹，
那是我童年的翡翠家乡。

甜蜜红润的热带水果，
香味扑鼻的沙嗲美食，
热情奔放的可爱女郎，
那是我们怀念的梦乡。

远处飘来，情歌绵绵，
你在何方，踪影难寻，
我们何时能心心相印，
让我再情系迷恋的故乡。

故乡故乡，我的故乡，
日夜怀念旧日的情怀，
梦想重见你的微笑，
再次重游那美丽的故乡。

Tags: 苏门答腊岛, Medan 棉兰, 印度尼西亚, 东南亚华人

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NASA 今日影像

Remnant of a Supernova

Vital clues about the devastating ends to the lives of massive stars can be found by studying the aftermath of their explosions. In its more than twelve years of science operations, NASA's Chandra X-ray Observatory has studied many of these supernova remnants sprinkled across the galaxy. The latest example of this important investigation is Chandra's new image of the supernova remnant known as G350.1-0.3. This stellar debris field is located some 14,700 light years from the Earth toward the center of the Milky Way. Evidence from Chandra and from ESA's XMM-Newton telescope suggest that a compact object within G350.1+0.3 may be the dense core of the star that exploded. The position of this likely neutron star, seen by the arrow pointing to "neutron star" in the inset image, is well away from the center of the X-ray emission. If the supernova explosion occurred near the center of the X-ray emission then the neutron star must have received a powerful kick in the supernova explosion. Data suggest this supernova remnant, as it appears in the image, is 600 and 1,200 years old. If the estimated location of the explosion is correct, this means the neutron star has been moving at a speed of at least 3 million miles per hour since the explosion. Another intriguing aspect of G350.1-0.3 is its unusual shape. Many supernova remnants are nearly circular, but G350.1-0.3 is strikingly asymmetrical as seen in the Chandra data in this image (gold). Infrared data from NASA's Spitzer Space Telescope (light blue) also trace the morphology found by Chandra. Astronomers think that this bizarre shape is due to stellar debris field expanding into a nearby cloud of cold molecular gas. The age of 600-1,200 years puts the explosion that created G350.1-0.3 in the same time frame as other famous supernovas that formed the Crab and SN 1006 supernova remnants. However, it is unlikely that anyone on Earth would have seen the explosion because of the obscuring gas and dust that lies along our line of sight to the remnant. These results appeared in the April 10, 2011 issue of The Astrophysical Journal. Image Credits: X-ray: NASA/CXC/SAO/I. Lovchinsky et al; IR: NASA/JPL-Caltech
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