天南地北 -大衛隨想錄 David Caprice

‘天南地北’ Category

Aloha ! 请到夏威夷来>

Tuesday, August 19th, 2008• Category: 夏威夷 Paradise, 夏威夷之恋

Fleming Beach, Maui, Hawaii

Aloha ! 请到夏威夷来

— 黄达维, 2008.08.19

让波尼尼西亚浪漫的歌声,
带你进入人间天堂。
让艳丽奇花的芬芳，
把爱送进你的心房。

让太平洋碧蓝清澈的海水，
拥抱你的肌肤使你陶醉。
让夏威夷温暖和煦的阳光，
打开你那善良心灵之窗。

来吧！期待纯真情感的朋友，
让美妙的Hula舞姿，
甜蜜的友谊，
迷人的微笑，
送走你那疲惫的身心，
迎来永生快乐的梦境。

Tags: 美国, Hawaii, USA, 夏威夷• No Comments »

Quote 引语随想

人人有直接或通过自由选择的代表
参与治理本国的权利.
人人有平等机会
参加本国公务的权利.
人民的意志是政府权力的基础;
这一意志应以定期的和
真正的选举予以表现,
而选举应依据普遍和平等的投票权,
并以不记名投票或相当的自由投票程序进行. — 《世界人权宣言》第二十一条, 联合国
Melody of Life 生命的旋律

JAMES LAST - North Sea Waltz (Wo Die Nordseewellen)
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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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Aloha ! 请到夏威夷来>

Quote 引语随想

Melody of Life 生命的旋律

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