有的人呢，有眼不能看，有耳却不能听
可惜了上帝给他的恩赐！ 唉，可惜了

找了上千个星球，才找到第一个能住人的世外桃源，不过还未知多远？
骑马海 发表于 2014-3-29 17:22 http://bbs.51.ca/images/common/back.gif

    你该问问费神仙去啊

找了上千个星球，才找到第一个能住人的世外桃源，不过还未知多远？

又是周末
问弟兄们安！

- 此帖来自无忧论坛手机版

宇宙万物，都是上帝为地球而设计制造的

这是由中古时代的圣经说的，当时连罗马教廷王室都相信了。

我不打算在这个帖里讨论这问题，请你回到圣经找答案帖子上去，我会在那里解释这问题，因为这帖子只讲科学，不谈宗教！

回复 183# 小盐粒儿


    小盐粒，不知你有没有听过这一说？

听说为什么咱们的银河系有多条旋臂？就是引力波造成的
骑马海 发表于 2014-3-20 18:54

我还听一个科学学说称：宇宙万物，都是上帝为地球而设计制造的————科学家们惊讶不已，找不到答案，ｗｈｙ　ａｎｄ　ｗｈｙ　？
但是我们在上帝那里可以找到——————上帝爱人类，不要问为何，因为答案我们听不懂

回复 185# 骑马海

是个注意观察的人，像我哈

这里我想知道，这个引波力，又是怎么来的呢？

我第一次听到引力波是从倪匡所著的卫斯理科幻小说里，描写他驾驶一艘宇宙飞船遇到引力波而被转移到外太空，遇到各种不同的外星人，有巨大数十倍的巨人，也有已经进化到只剩下一组活动脑电波的永生外星人，经过许多年流荡，人都老了，一天巧遇宇宙引力波，终于回到地球，原来只隔了几个月，卫斯理及伙伴又变回年轻了。

听说为什么咱们的银河系有多条旋臂？就是引力波造成的

回复 183# 小盐粒儿

盐粒的贴太高深，我的智商是无解啦

但是我喜欢看你和马海两人聊这事，很有趣，照片太绝美！不是上帝，谁能在宇宙中创造它！！

Hardy Star Survives Supernova Blast



当超级恒星的燃料燃烧殆尽时，它会发生坍塌和爆发，成为一颗超新星。虽然这样的爆发是非常剧烈的，但是它的联星有可能在这样的爆发中幸存。美国宇航局的科学家利用各种探测手段发现了一个这样的幸存者的证据。

When a massive star runs out fuel, it collapses and explodes as a supernova.  Although these explosions are extremely powerful, it is possible for a companion star to endure the blast. A team of astronomers using NASA’s Chandra X-ray Observatory and other telescopes has found evidence for one of these survivors.

This hardy star is in a stellar explosion’s debris field ? also called its supernova remnant ? located in an HII region called DEM L241. An HII (pronounced "H-two") region is created when the radiation from hot, young stars strips away the electrons from neutral hydrogen atoms (HI) to form clouds of ionized hydrogen (HII). This HII region is located in the Large Magellanic Cloud, a small companion galaxy to the Milky Way.

A new composite image of DEM L241 contains Chandra data (purple) that outlines the supernova remnant. The remnant remains hot and therefore X-ray bright for thousands of years after the original explosion occurred. Also included in this image are optical data from the Magellanic Cloud Emission Line Survey (MCELS) taken from ground-based telescopes in Chile (yellow and cyan), which trace the HII emission produced by DEM L241. Additional optical data from the Digitized Sky Survey (white) are also included, showing stars in the field.

R. Davies, K. Elliott, and J. Meaburn, whose last initials were combined to give the object the first half of its name, first mapped DEM L241 in 1976. The recent data from Chandra revealed the presence of a point-like X-ray source at the same location as a young massive star within DEM L241’s supernova remnant.

Astronomers can look at the details of the Chandra data to glean important clues about the nature of X-ray sources.  For example, how bright the X-rays are, how they change over time, and how they are distributed across the range of energy that Chandra observes.

In this case, the data suggest that the point-like source is one component of a binary star system.  In such a celestial pair, either a neutron star or black hole (formed when the star went supernova) is in orbit with a star much larger than our Sun. As they orbit one another, the dense neutron star or black hole pulls material away its companion star through the wind of particles that flows away from its surface. If this result is confirmed, DEM L241 would be only the third binary containing both a massive star and a neutron star or black hole ever found in the aftermath of a supernova.

Chandra’s X-ray data also show that the inside of the supernova remnant is enriched in oxygen, neon and magnesium. This enrichment and the presence of the massive star imply that the star that exploded had a mass greater than 25 times, to perhaps up to 40 times, that of the Sun.

Optical observations with the South African Astronomical Observatory's 1.9-meter telescope show the velocity of the massive star is changing and that it orbits around the neutron star or black hole with a period of tens of days. A detailed measurement of the velocity variation of the massive companion star should provide a definitive test of whether or not the binary contains a black hole.

Indirect evidence already exists that other supernova remnants were formed by the collapse of a star to form a black hole. However, if the collapsed star in DEM L241 turns out to be a black hole, it would provide the strongest evidence yet for such a catastrophic event.

What does the future hold for this system? If the latest thinking is correct, the surviving massive star will be destroyed in a supernova explosion some millions of years from now. When it does, it may form a binary system containing two neutron stars or a neutron star and a black hole, or even a system with two black holes.

A paper describing these results is available online and was published in the November 10, 2012 issue of The Astrophysical Journal (http://arxiv.org/abs/1208.1453). The authors are Fred Seward of the Harvard-Smithsonian Center for Astrophysics in Cambridge, MA; P. Charles from University of Southampton, UK; D. Foster from the South African Astronomical Observatory in Cape Town, South Africa; J. Dickel and P. Romero from University of New Mexico in Albuquerque, NM; Z. Edwards, M. Perry and R. Williams from Columbus State University in Columbus, GA.

NASA's Marshall Space Flight Center in Huntsville, Ala., manages the Chandra program for NASA's Science Mission Directorate in Washington. The Smithsonian Astrophysical Observatory in Cambridge, Mass., controls Chandra's science and flight operations.

Image credit: X-ray: NASA/CXC/SAO/F. Seward et al; Optical: NOAO/CTIO/MCELS, DSS

回复 181# 小盐粒儿
视频资料：


引力波介绍