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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. 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… 2. Nature Will Not Imagine Summary: The answer is the same.So you look for the root of -1 times the root of 24.The root of any negative number will be the root of -1 times the root of the absolute value of that number.So the root of -36 is the root of -1 times six. The root of -1 is defined as IMAGINARY, so the root of -36 is IMAGINARY SIX. Multiply real by imaginary (of imaginary by real) and you get imaginary. Nature has REJECTED the imaginary.At this point I wrote (http://www.wehner.org/euler/solution.htm ) that 'If it… 3. EU's resistance to GMOs hurts the poor Summary:By James Wachai The bitter dispute between the U.S., Canada, and Argentina, on one hand, and the European Union (EU), on the other, over the latter's restrictive policies towards genetically modified foods reaches what is likely to be an acrimonious peak this week when the World Trade Organization (WTO) rules if the EU has violated trade rules by blocking foods produced using modern biotechnology techniques. EU's ban on GMOs has exasperated the U.S., Canada and Argentina - leading gro… 4. Aliens in Archaeology By Robert Baird Summary: Here is a little of the Theosophist viewpoint on the serpent or Dragon wisdom that led Central America and included people boarding their kid's heads to look like serpents.'We read in The Secret Doctrine that fohat, divine messenger, intelligent cosmic electricity, who at the Divine Word proceeds forth to create worlds and the beings thereon, moves Article: As you read this book you will have to suspend the disbelief you feel when confronted with my assertions that for at least 5000 ye… |
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