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Some Astranomical Facts

December 10, 2009 by admin Comments Off

How many facts are there to be known or learned about all the objects and phenomenon in our entire universe? Just think: there are about 1 x 10 ^22 stars in the universe, that’s 10,000,000,000,000,000,000,000 stars; then there are many of those stars that have planets in orbit around them. Then consider the moons that orbit those planets and the comets and asteroids, the galaxies these stars form, the nebulae and black holes and everything else that’s out there. The amount of information and data is really quite mind-boggling. This article definitely will not contain every fact about astronomy, but they are very interesting facts nevertheless.

We will start by taking a look at a small section of astronomy: “the brightest stars seen from the Earth”. That is excepting the Sun which is roughly 250,000 times nearer than the next nearest star. In fact, it is so bright that when the sky is viewed from the Earth, it blinds out all the other stars in the sky during a phenomenon called daytime.

Remember that according to the scale for the magnitudes given, lower numbers are brighter. Our Sun would be about -26.73, while the full moon is -12.6. So, with that in mind, here are the top 5:

#5 is Vega, meaning ” falling eagle” in Arabic. is in Lyra. It’s more or less 25 light years away and has a magnitude of 0.04.

When considering these astronomical facts, please remember that ‘brightest from Earth’ doesn’t mean largest or brightest. The Sun is not the largest or brightest star in the universe or even the galaxy, yet it appears so bright because it is so near compared to other stars.

#4 is Rigel – a very bright, bluish-white supergiant star in the constellation Orion. It is a binary star, with an average apparent magnitude of 0.12. It’s scientific name is Beta Orionis. Rigel is Arabic for ‘foot’. It’s about four light years from Earth.

#3 is Arcturus. The name is Latin/Greek and means ‘guardian of the bear’. This star is roughly 37 light years away. It is in the constellation of Bootes, behind The Great Bear. It has a magnitude of 0.00

#2 Canopus – the Greek name of the pilot of the sailing ship Argo in the stories of Jason and the Argonauts, is the brightest, however, because it is 313 light years from Earth, it’s only second in this list of the five brightest stars seen from Earth. It has a magnitude of -.62.

#1 is Sirius, which translate from the Greek as ‘scorching’. It’s also sometimes called the ‘Dog Star’ because it is the brightest star in the constellation of Canis Major, which means ‘The Big Dog’ in Latin. It is situated only 9 light years from Earth, which makes it easily the second closest of these top five. It has a magnitude of -1.44, which makes it very easily the brightest star that can be observed in the night sky.

These few data don’t even scratch the surface of subject of astronomy but it’s something for you to think about the next time you gaze up into the night sky.

Are you interested in Astronomy for Beginners? If you are then, please visait our website at http://astronomy.the-real-way.com

 

Climate Change Quicker Than Predicted

October 16, 2009 by admin Comments Off

An increasingly large amount of peer-reviewed research, published since the IPCC 4th Assessment Report was released in 2007, shows that global warming is happening right now, and that it is quicker than predicted just 2 years ago.

The evidence for this statement is from many areas. Some of the areas showing change are shown below.

-Multiple ecosystems, in multiple locations, now show the effects of global warming. Examples include the timing of plant flowering, animal breeding, and lake thawing.

-Warmer ocean surface temperatures in Pacific & Atlantic hurricane-formation zones leading to stronger storms are significantly linked to human-induced warming.

-Ocean acidification is happening rapidly, as a result of CO2 in large amounts being dissolved in sea water. This will have massive changes on marine ecosystems and also food security for many nations.

-Calculated sea level rise this century will be greater than that calculated just 2 years earlier. It is expected to rise at least a meter, according to new scientific evidence.

-The increased melting of the Greenland ice sheet which began in the summer of 2004 has been definitely related to global warming.

-The West Antarctic Ice Shelf has undergone rapid melting over the last 10 years and has suffered 10 major ice shelf collapses over that time.

-Northern polar sea-ice is melting much quicker than previously estimated, and it is likely that the Arctic will be free of ice in summer within a few decades.

-Permafrost in the Arctic Circle is thawing much quicker than recently thought, and is releasing larger amounts of greenhouse gases than predicted.

The climate change that we are now witnessing is expected to continue for millennia, even after all anthropogenic carbon dioxide production stops. This is because of the major lags present in the climate system, and the slow removal of CO2 from the atmosphere.

Read more at the world’s funkiest climate change blog, or learn more about accelerated sea level rise.

 

Hybrid Honda Cars

August 29, 2009 by admin Comments Off

Most of us have heard of the various Honda cars on the market today. You can include in this range of cars, the Honda hybrid cars. These hybrid cars include the Honda Accord Hybrid, the Honda Civic hybrid 4 door car and Honda Insight, which is a two seater. These are not the only hybrid cars in Honda’s stable, there are other ones but these are the most well-known models.

You will find that Honda hybrid cars come in various flavours of their popular conventional Honda cars. The Honda Civic hybrid is such a hybrid car that is very popular. This four door compact vehicle is one of those that you can choose either as new or as a second-hand car.

The hybrid Honda Civic has a 5 speed manual transmission gearbox. This particular Honda hybrid car is known as an assist hybrid car. The Honda Civic hybrid is the only hybrid car to have won an award for the best international engine.

While you can get information about the various models of Honda hybrid cars from the Honda dealers’ websites on the Internet, you might want to go along to the showrooms in person. This will provide you with a better understanding of whether a hybrid car will suit you. Having looked into this information, you can then see which Honda hybrid type is best for you.

In this way, you can ensure that you are getting good value for your money. And, speaking of money, you may want to check the price of other cars that catch your eye in the hybrid Honda car stable. For those of you who like the appearance of the hybrid car from Honda, you have a choice of a previous year’s cars or the new batch of Honda hybrid cars. Since there are lots of details you need to check, when it comes to buying cars, it is best if you have the questions you need answered dealt with by a qualified Honda dealer.

In this way, you can be assured that you have chosen a Honda hybrid which is not only affordable but is also capable of meeting your requirements. The hybrid cars that you are able to buy will provide you with lots of benefits both in the long term and the short term in keeping the costs of fuel down.

Because there are many different vehicles on the market, you can always be sure that you will find one that you like. The trusted Honda hybrid is the best choice for the discerning hybrid car owner.

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Hybrid Cars vs. Plug-in Hybrid Cars

August 5, 2009 by admin Comments Off

Hybrid cars are on everyone’s lips. Twenty, forty, or fifty dollars for a full tank of petrol? Who in their right mind wants to pay that sort of money? However, frustrated, the petrol consumer sighs, but pays up. However, hybrid vehicles are applauded for the small amount of gas they need to operate, and they are being driven off the lots of car dealerships each and everyday in increasing numbers.

So, what about a plug-in hybrid? Most users have heard that these vehicles are great as well. So, someone might be asking him or herself, what exactly a plug-in hybrid is? How they work, and what the difference between a plug-in hybrid and a regular hybrid is?

Plug-in hybrids are able to run just on batteries, but they use gas also. These types of hybrid cars have some of the characteristics of hybrid vehicles. They are also are very similar to electric vehicles.

Plug-in hybrid vehicles need to be charged externally by plugging them into an electrical power source. The combustion engine of plug-in hybrid vehicles is used only as a back up. These cars can run only on batteries if desired, but it is expected that these kinds of hybrid cars are recharged every day.

Hybrid cars can go just as many miles as a conventional car. Designed to go the extra mile where gas-mileage is concerned, hybrids can be driven on the highway, in cities, or wherever else a person needs to travel.

On the other hand, plug-in hybrids are designed to be driven commuter-type distances, meaning about twenty to sixty miles between destinations. This way, the plug-in hybrid does not have to use its back up combustion engine, but plug-in hybrids can go further using fuel too.

Hybrids help to minimize pollution, but they still pollute the air. Compared with plug-in hybrids, hybrid cars still have a long way to go as far as pollution is concerned. Since plug-in hybrid cars can run solely on their battery power, they don’t have to emit waste gases at all.

Plug-in hybrids actually do combat greenhouse gas emissions and plug-in hybrids use virtually no oil, imported or not. Studies have shown that electric hybrids emit at least 67% less greenhouse gases compared with gasoline cars. Since the electric used to power plug-in hybrids is completely renewable, the difference in greenhouse gas emissions may be even greater than the study indicated.

So there you have it – those are the main differences between plug-in hybrids and regular hybrid cars. It could make a big difference, but you would be surprised at how little it actually matters at the moment, but tht’s only because plug-in hybrids are not being marketed to consumers yet! But this article should make you excited about the fantastic plug-in hybrid car, coming soon to a dealership near you.

And it’s going to be a great debut too – people already like regular hybrid cars, but they haven’t seen anything until they see the new plug-in hybrid cars. However, for now, maybe we should just be satisfied with what we already have, because who knows? Before plug-in hybrid cars come out onto the forecourts, something even better might be introduced onto the market.

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Home Schooling and the Study of History

July 8, 2009 by admin Comments Off

Do you think that passing time in traditional classrooms is a waste of time? For some people, that is probably true. For example, a test is due and the pupils are asked to memorize a lot of dates and names. However, after taking the test, they will definitely forget 90% of those dates and names. That’s what most students do when they have tests. If you are one of these people, you will find traditional history lessons boring, so home schooling, which focuses more on the history of the world, will surely interest you more.

Just simple memorization is not enough to realize the importance of historical, famous people and fateful events. Through home schooling in history, you can learn about the different cultures of the past in a different, but interesting way – that is your own way! By the study of history, you will also realize the current situation of the world.

But, if you think that home schooling is the best option for your child’s learning, you should also be prepared to undertake some responsibilities. Since there will be no teacher physically present, you will have to oversee your child’s learning development by yourself.

Let’s say your kid is interested in a particular sport. You could combine history and home schooling by just putting a map on the wall of your child’s bedroom and mark the location of his favourite sports team. Make sure that you track all the team’s games, scores, activities and schedules. Then, you could go back to history lessons by reading biographies of the different athletes, who had been famous in the particular sport that your child follows. Apart from that, you can also examine the history of that specific sport and discover where it originated, its inventor, and the other things happening in that particular time in history.

For example, if your child likes baseball, you could teach your child about the history of Negro Leagues, government hearings on the use of steroids, and other favourite pastimes at that time. Just remember that you can apply this concept to any interest such as dances and inventions. You can also have conversations with your child concerning current affairs or read interesting historical works and other books. Aside from that, you can also watch documentaries together with the rest of the family. There are various resources that you can use in home schooling, such as TV, maps, books, a globe, an atlas, and encyclopedias. Due of the exciting adventures that you and your child will read about and see on film, your child will find it easier to remember the names and dates of the history lessons. After all, education is better when it is done in a fun way.

These methods are advisable if your child is still young, however once your child is older, you should choose a home schooling program that is suitable for his/her age group. The programs are available at the elementary, high school, and even college levels. You simply have to search the Internet for these various programs. One advantage of these programs is that you can tailor them to fit the requirements of your child. However, you must see to it that all the lessons are followed by your child.

After you and your child decide to give home schooling a shot, you must be ready to make some changes to your lifestyle. The learning will now take place in your home not at a remote school and through the various resources that you want to use, which should include a computer and the Internet.

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Astronomy: Picture of the Day

May 13, 2009 by admin Comments Off

Astronomy is the study of the universe. It is a serious science, but also a very pleasurable hobby. Therefore, whenever an astronomy picture of the day is offered to people, they usually grab it. There are plenty of such pictures to choose from, and plenty of interesting objects out there to keep people looking.

Of course ,NASA is one of the primary sources for an astronomy picture of the day. This site, NASA.gov, shows a new picture each and every day. There is also a section that shows videos. These could be used to create your own image site. Saturn’s moon Enceladus was the ‘star’ feature on November 5, 2008.

This photo was taken by a passing spacecraft. It can reproduce details the size of a bus. The ice on this moon reflects as glare, nearly 100% of all the sun light that hits it. So you would need to wear sunglasses! This moon is so unusual that Cassini will continue to fly by for more pictures later on in its mission.

NASA retains an archive of all the astronomy footage of the day dating all the way back to June 16 of 1995. It was a ‘what if’ photo of the Earth posing as a neutron star. The image is a computer generation. The most interesting feature is that the constellation of Orion is visible twice. Even light from behind a neutron star is visible because the dense star bends the light around it. This causes some objects to be seen twice.

The entry for September 8th, 1995 was an amazing image of the central part of the ‘Milky Way’ galaxy taken by NASA’s COBE satellite. This area is usually not visible because of the dust obscuring it. But COBE scans in infrared, so produced that fantastic picture of our very symmetrical galaxy.

The astronomy picture of the day was identical on January 1st, 2000 and January 1st, 2001, the reason being that both dates displayed this image is that the majority of people considered the year 2000 as the first year of the third millennium.

However, the third millennium actually commenced on January 1st, 2001. NASA figured it was just better to just do it on both dates. apod.nasa.gov/apod/ap010101.html displays man’s view of the universe as it progressed from mere objects orbiting the Earth, all the way to the ‘Big Bang’ creating the universe as we know it today.

NASA has many more days with their very own unique astronomy picture of the day. Visit their web site, NASA.gov to view them.

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