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One light year is the distance travelled by light (in vacuum) during one year. Therefore one light year equals (300 000 000*3600*24*365)m. A single light year is definitely huge: 9.46 trillion kilometres-no need to put this in digit form-in fact. A star that you see in the night sky is not one but many light years away. Article: When you look at the keen night sky, you see stars-those tiny diamonds suspended in the vast pitch-black emptiness. But stars shine because ? Our own sun, which is a star, emits light. Stars are like giant bulbs but are much more powerful. Light travels at a speed of 3.0*108m/s in vacuum and space is mostly vacuum. In other words light can cover a mighty distance of 300 000 000m in only 1 second! The thing is that 300 000 000m is a just one of those small amounts in space. Other stars are billions of kilometres-let impair metres-away. Astronomers in fact use light year as the unit for distance. One light year is the distance travelled by light (in vacuum) during one year. Therefore one light year equals (300 000 000*3600*24*365)m. A single light year is definitely huge: 9.46 trillion kilometres-no need to put this in digit form-in fact. But where exactly do I want to converge? A star that you see in the night sky is not one but many light years away. This means that it is very far away. But most importantly, it means that light from this particular star takes many years-and not mere seconds-to reach your eyes! So what? When you watch a star, you are positively only seeing the light it emitted years ago. At present, the star may be somewhere else in the night sky. (Stars do move in space). It might have deflected a little to the east or north or north-northeast. The star is still emitting light though. This light will however be seen in the following decades or even centuries; or simply next year. When you watch stars at night, you are for a certainty looking in the past. So who or what is time travelling? The star? You? Or light? The further something is from you, the further in the past you are penetrating into. Maybe then, someday, the newest technologies will be able to observe these seconds hind the Big Bang-if it ever occurred in the first place.
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Advice Home Business Technology Online Advertising Motivational Internet Marketing SEO Help Online Games Science Articles Happiness More Articles:1. Scientists Declaration about The Holy Quran and Islam-William Hay Summary: But I think it is extremely interesting that they are there and this work is going on to discover it, the meaning of some of the passages.'And when he was asked about the source of the Qur'' he replied, 'Well, I would think it must be the divine being.' 'That is a difficult question which I have been thinking about since our discussion here. Article:Professor Hay is one of the best known marine scientists in the USA. Sheikh cAbdul-Majeed A. Zindanī met with him and asked him many que… 2. A New Perspective on Ancient Systems of Healing Summary: For, this is the paradigm that the ancient systems of Medicine - like Ayurveda, Yoga, Chinese Medicine, Homeopathy, Mayan cultures and other ancient cultures were based upon. There is a flow of energy that is taking place all the time in the human body. It helps bring the mind under control, clear energy blocks, massages internal organs and promote lymphatic flow etc The current trend in Medicine today is to treat the body as if the mind does not exist and the mind as though the body do… Free Animal Clipart Casio Watches Best Phone Cards Rolex Replica Watch City Lots SJ 3. A Brief History of Creation - Part Two Summary: but having tried, we are left with a bonus, a something, which is our process of defining 'nothing.' Creation of something from nothing is not a function of defining something, but a function of attempting to define 'nothing.' And then, if that process of definition - which already is an existence - looks back at its origins, if this process of defining investigates into its own genesis, then what does it see? Since 'a' can only be defined as 'a' with meaning if it implies 'not-a' (the … 4. Alternative Energy Series Cheap, Clean Energy Everywhere Now! Summary: The answer is we would have more than three times the power at the point of greatest mechanical advantage in the power stroke as we do with the bicycle crank in the middle of its down stroke.When there is absolutely no liquid fuel in our air/fuel mixture, the rate of combustion is many times greater than when there is an abundance of liquid fuel, as in the 19th century slow burn technology. An engine that can burn all its fuel in twenty degrees of crankshaft rotation will deliver twenty… |
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