Get to Know About Galileo Galilei Astronomy

Having born in the late of 1500's, Galileo hometown was in Pisa, Italy. His name starting to became famous when he eventually was a mathematics teacher despite having any higher education qualifications. This was the first step for him into the Galileo Galilei astronomy when he completely denied the theory about object of different weight falling at different speeds by Aristotle.

Unfortunately, he didn't continued as a teacher but instead take a position at the university of Padua. From here, he expand his knowledge in astronomy field.

Without holding back, Galileo invented the compass and started to explore physics. He then discovered the law of falling bodies and the parabolic path of the projectiles. All of his early inventions later became so important in astronomy. During the time, he only focusing on what Copernicus have to say rather than by Aristotle and Ptolemy. Copernicus has stated that the solar system is heliocentric, that is the planets rotate around the sun. Meanwhile, Aristotle and Ptolemy proposed that the solar system was centerd around the earth, and even the sun rotated around the planet that we lived now. After further research and study, the model proposed by Copernicus that the planets rotate around the sun has been proven. And as you may know today, Copernicus was absolutely right about what he said then.

Inspired by the spyglass that was originally invented in Holland, Galileo made his own unique telescope which he pointed to the sky. His unique telescope helped him to discovers mountains and craters on the surface of the moon. He then learned that the milky way was made up of the individual stars and discovers Jupiter's four largest moons. Soon after that, he published all his findings and researches and later became the court mathematician in florence. With no more teaching schedule, he manage to discover Saturn's phases that took him almost 9 months. This discovery further proving that Copernocus was right.

Galileo's theory has been always contradicted with Aristotle. But still many scientist published his findings because they're mostly agreed with Galileo. In the year 1614, a priest ion Florence denounced Galileo Galilei Astronomy because they believe that Earth centered solar system put man's home, and thus in man, at the center of the things. Galileo gave a feedback with the action by writing a letter and proclaiming the bible was irrelevent to the science.

By 1616, the church has censored Galileo books, he has been intructed cardinally to stop teaching that the earth moves. Galileo insist, he keep on studying the falling objects, comets, and methods to determine the longitud at sea by referring to the phases of the Jupiter's moons. It has been said after Galileo signed the agreement that the earth doesn't move he commented that "I would say here something that was heard from an ecclesiastic of the most eminent degree; :And yet...it moves."

Autor: John Vertmog

Look for more information on Galileo Galilei Astronomy. Feel free to visit John Vertmog Astronomy website by clicking here: http://www.online-astronomyguide.com

Added: March 1, 2009
Source: http://ezinearticles.com/

Telescopes For Sale For Budding Astronomers

Tips for Finding the Right Astronomy Telescope for You

Children and adults everywhere find the night sky fascinating and love to make wishes on the stars they see. As children get older, they begin to learn about what is in the night sky and many develop an interest in astronomy.

Astronomy is a word from the Greek language. Astro, the first part of the word, comes from the Greek word for the star shape and also refers to outer space. The last part of the word, onomy, is Greek for "the study of". So from the original Greek, astronomy means study of the star or outer space.

Novices and experienced astronomers need one main tool to learn about and enjoy the night sky: an astronomy telescope. There are many different kinds of astronomy telescopes. You need to choose carefully and consider some important aspects of the telescope, such as the size of the lens and the sturdiness of the telescope stand, when you are looking to buy your first telescope.

The Importance of the Lens Diameter

Certain aspects of your new astronomy telescope will either make it enjoyable or leave you frustrated. Lens diameter is one of these aspects. Forget about magnification; the size of the lens of the telescope is more important. The larger the lens diameter, the more light it lets into the telescope and that affects how well you can see the things you are trying to look at in the night sky. The brighter the light, the clearer the images will be.

Choosing a Good Astronomy Telescope Stand

You will want to give a lot of thought to the type of stand you mount your new telescope to so that you get the most efficient use out of your telescope. A good tripod stand is the way to go. You want to choose a stand that will keep the telescope still so you get the best views of the night sky. Any movement at all will make the images you see blurry and cause you frustration.

Where and How to Shop for an Astronomy Telescope

You need to find out what your options are and know what the different telescopes offer before choosing one. One of the easiest ways to gather information about telescopes is by looking online. You should try and find out what the features are that are offered on each kind of telescope, how much they cost and what reviewers think about the different brands of telescopes.

One way to choose a good astronomy telescope is to try some of your potential telescopes out. If there is an astronomy club in your local area, you might be able to join and meet people who share your hobby. Then, you can try a variety of different telescopes to see which ones work for you.

You can also get a lot of useful information to help you choose an astronomy telescope by talking to people who are in astronomy. Your friends and family members who have astronomy telescopes can tell you what they like and dislike about theirs. If you have friends or family involved in astronomy, you might ask them to let you know when they are replacing their telescopes so you can possibly buy their old one from them.

Autor: Bo Collins

If you are looking to take your astronomy to the next level and learn more about how to buy a telescope drop by the TelescopesCafe.

Added: February 21, 2009
Source: http://ezinearticles.com/

Meteorites - Basic Things You Need to Know Before Buying

Buying meteorites for sale through the web can take on many forms.

In a dream scenario, they are pieces of truly rare meteorites that have fallen to Earth in dazzling cases of cosmos phenomenon that has garnered national press attention. In a preferable scenario, they are independently verified pieces of interstellar rock that have fallen to Earth through a mix of physics and fate. In the worst case scenario, they are pieces of rock a disingenuous schemer has collected from the bottom of their local canyon.

No matter what the case, it is highly desirous for anyone with an enthusiasm for all things out of this world to purchase and take home a meteorite for their personal collection.

The variety of meteorites for sale can be classified into two parts: chondrules and achondrites. Chondrules make up more than 86% of all meteorites that fall to Earth. They are made up of organic matter, such as amino acids, and are more common when searching through the channels of the Internet for purchasing a meteorite. If a site you encounter markets a majority of their meteorites as chondrules, it is a sign that they are a legitimate reseller.

Achondrites are rarer than Chondrules. This type of meteorite makes up around 8% of all meteorites that fall to earth. They are composed of more rare materials than chondrules, such as igneous rock from other planets, and are usually ancient in both age and composition. Achondrites are the most sought after form of asteroid and can sometimes contain materials and minerals that are found in either rare form or not at all throughout the entire planet.

Obviously, for a meteorite enthusiast, the prospect of owning an achrondrite meteorite is very lucrative. However, you should be prepared to shell out a considerable sum to take home one of these rare rocks. Any Internet site that claims to sell achondrite meteors at lower prices than their competition should be eyed with a level of skepticism. After all, if you're seeking to create an authentic collection of meteorites, you should only expect the finest, most genuine space particles you can find. Search through a variety of sites that have meteorites for sale and enjoy your shopping experience.

Autor: Henry Schweizer

Are you a meteorite collector? Make an educated purchase. Read our detailed information about meteorites, fossils and minerals and find meteorites for sale at the hottest prices in our store.

Added: February 20, 2009
Source: http://ezinearticles.com/

Meteorites - Own a Piece of Interstellar Space

A web site advertising meteorites for sale is proof of how far the Internet has come as a communications medium. Where the tiny chunks of interstellar rock were once heralded across the country as some of the rarest material on earth, you can now purchase them twenty-four hours a day, seven days a week. When traveling across the country was once required for those seeking their precious material, you can now have them shipped to your door with the click of a mouse button.

Realizing meteorites are for sale is just one way to appreciate the incredible journey that most meteorites endure. Existing as chunks of interstellar space debris, they have traveled across millions of miles of space and have encountered an incredible number of foreign bodies and interstellar energies that humans have yet to encounter face to face. Knowing that you can purchase such an object and hold it in your hand is a truly thrilling experience.

Meteorites are not only an Earth-based phenomenon. Through the human race's study of space, we have learned that meteorites fall to Earth on all celestial bodies with a gravitational pull strong enough to bring meteorites into their atmosphere. Our observations have recorded meteorite landings on both the moon and Mars.

The fact a meteorite has landed on Earth is also a one-in-a-million occurrence. Thousands of pieces of space matter and other materials enter the Earth's atmosphere each day. Often, they are burned up upon entry by the intense heat of the Earth's atmosphere. A meteorite has not only landed on Earth from space, but has also mustered up the endurance to make it through our blazing atmosphere. When you purchase a meteorite, you're purchasing one tough little sucker!

Meteorites for sale on a web site allow you to indulge in your fascination with space. Take the time to browse a variety of meteorite sites and find one that is a legitimate dealer of authentic meteorites. Once you have secured your piece of space history, take steps to preserve it. If you play your cards right, you will own a piece of interstellar space that you can treasure for a lifetime.

Autor: Henry Schweizer

Are you a meteorite collector? Make an educated purchase. Read our detailed information about meteorites, fossils and minerals and find meteorites for sale at the hottest prices in our store.

Added: February 19, 2009
Source: http://ezinearticles.com/

Should I Buy a Reflecting Telescope Or a Refracting Telescope?

Understanding Reflecting Telescopes and Refracting Telescopes

Telescopes are great tools for looking at objects in the night sky and the key part of any telescope is the objective. The objective is what allows light into the telescope enabling you to see the images from the sky. Telescopes with bigger objectives allow more light in and that means a clearer and crisper image for the viewer.

The two main types of telescopes are reflecting telescopes and refracting telescopes. These are similar in design except for the manner in which they collect light.

Differences Between Refracting and Reflecting Telescopes

The objective in refracting telescopes is a piece of glass that is located near the front of the telescope. The objective takes the light that it gathers and refracts, or bends, it to send it to the eyepiece, which magnifies the image. Refracting telescope technology is used in other equipment like binoculars, rifle scopes and spyglasses.

Reflecting telescopes are different because the objective is a mirror at the distal end of the telescope instead of a glass lens at the front. The mirror in a reflecting telescope has a concave shape, a bowl like shape, which allows it to capture the light in the center of the mirror and send it as one stream of light towards the eyepiece so the image can be seen.

Benefits of Using a Reflecting Telescope

Reflecting telescopes are preferred by many for several reasons. One reason is that there is less distortion with a reflecting telescope than with a refracting telescope since the mirror is able to gather and reflect all wavelengths of color consistently. The use of the mirrors instead of glass lenses makes reflecting telescopes more affordable than refracting telescopes.

When mirrors are used instead of glass lenses, the telescope can be enlarged to allow for the supports for the mirror to be located on the posterior of the telescope. The larger the mirror that is used, the more light that is reflected and the better and clearer the image will be.

Disadvantages of the Reflecting Telescope

Reflecting telescopes can have their own issues and problems as well. One problem can be the size of reflecting telescopes. As larger and larger mirrors are used, the telescopes have to grow in size to fit the mirrors inside. While you get better results with the larger reflecting telescopes, they are not very portable and it can be difficult to find a place to keep them when you are not using them.

Another problem is that reflecting telescopes may need to have the mirrors adjusted from time to time to keep them working perfectly and to maximize the light that is captured.

Autor: Bo Collins

Learn more about the different kinds of telescopes, how they work and where to find telescopes for sale.

Added: February 18, 2009
Source: http://ezinearticles.com/

Our Solar System - The Inner Planets

The inner solar system comprises of four planets, Mercury, Venus, Earth, and Mars.

Mercury

The closest planet to the Sun, Mercury is 48 million miles away from the Earth at its closest point in orbit. It is a mere 28.6 million miles away from the Sun at its closest point in orbit. Mercury orbits the Sun every 88 days and rotates around its axis every 58.65 days. Temperatures can range from -300 degrees Fahrenheit to 800 degrees Fahrenheit. Closely resembling the moon, the surface of Mercury is marked by craters from billions of years of cosmic collisions.

Venus

Similar in size to Earth, and there for called Earth's "Sister Planet," Venus is 25 million miles away from the Earth. Its orbit is the most circular of all the planets; it is 67 million miles from the Sun at its closest point and 68 million miles away from the Sun when it's at its farthest point, a mere 1 million mile difference. Venus takes about 243 Earth days to make one rotation about it's axis. The amount of time it takes to revolve around the Sun is less than that: about 226.3 days. This means daytime in Venus lasts for about 115 days, allowing temperatures to rise. Temperatures on Venus average about 867 degrees Fahrenheit. The surface of Venus is blocked by a dense atmosphere consisting of Carbon monoxide. Clouds of sulfuric acid are highly reflective, making Venus the brightest object in the night sky, save for the Moon.

Earth

Our home planet, Earth, is the largest of the inner planets. It ranges from between 91 and 94.5 million miles away from the Sun during its orbit. Temperatures range from -128 degrees Fahrenheit to 136 degrees Fahrenheit. From space, the Earth looks blue and white. The surface of the Earth is marked by large oceans and smaller land segments called tectonic plates.

Mars

Mars is about 35 million miles away from the Earth and ranges from 128 million miles and 155 million miles away from the Sun. It's day is similar to that of the Earth at about 24.6 hours and takes the equivalent of 1.88 Earth years to orbit the Sun. Also known as the "Red Planet" due to the layer of iron oxide covering the planet, Mars also marked by a number of craters. However the atmosphere of Mars prevents as many impacts as we see on the Moon. This atmosphere is very thin and subjects Mars to the harsh solar winds.

Autor: Elena Athanasiou

For more information on the solar system, visit Space.com.

For more information on the universe, visit NASA.gov

Added: February 14, 2009
Source: http://ezinearticles.com/

Registration For College - College Registration Process

The process of signing up for classes and getting approved is called registration. College registration Usually takes a few hours and is fairly simple. Just show up to your freshman orientation, listen to a few speakers, do a few tasks, meet with your adviser, and eventually select your classes.

The first step in beginning your college career, before registering for college classes, is to apply to schools. You will receive letters in the mail stating if you have been accepted or declined, and the reasons why. Whether you get declined or approved is based on how high your high school GPA is, your test scores, and the requirements of the college. Ivy League schools like Harvard University and Yale are obviously going to have much higher requirements than an average college. These school are incredibly hard to get accepted into and only the best students get in.

When going through the whole registration for college classes process, I would recommend taking a full schedule to start with, because you can always drop classes later on. Most colleges allow around a months time before you can no longer drop classes. This is great because you can go to a class several times, realize it's not going to be something you want to do at the time, drop it, and not receive a failing grade. You can also add new classes before the deadline, but be careful, if you join a class too late, you could fine yourself extremely behind everyone else.

Autor: Stephen Kiwanuka

To find colleges, scholarships, cheap books, and save on a whole lot more while going to college, click here.

HomePageCollege.com

Added: February 13, 2009
Source: http://ezinearticles.com/

Millions and Millions of Light Years Away; How Far is That Star?

Do we really know how far away the Stars are in light-years? Well, I always find it funny that they explain to people that the Stars you see are like looking back in the past to where they were so many millions or billions of years ago. In reality, both have moved, your platform (Earth) and it (said Star). So the star is not "X" amount of light years from you now, it's either closer or further.

Since light is affected by gravity, so unless you have a multi-dimensional Galaxy Positioning System, then all those estimations that are purported are nonsense really, don't you think? Well, at least our stated distance is merely a best guess or approximation, right?

Sure, and there is also a matter of density too, the density of space between interacting systems has a field of weak force and other forces, which effects light (that we use for measurement) and the entropy factors. TSD (time/speed/distance) is not linear, as if you are plotting point A to B in 2D.

Everything is moving, even if you draw a line on a piece of paper, the Earth spins at what 600 mph, 17,500 miles per hour around the Sun, the Sun is moving at 45,000 miles per hour. So, by the time you completed your line on that piece of paper, it's a hell of a lot longer than you might have ever considered and "IT'S NOT STRAIGHT!"

Indeed, I wish we had a really decent Galaxy Positioning System. It would make things much easier, as humans have a tough time with all this - their math is a little fuzzy. Perhaps because they only perceive a few dimensions? Too bad really, I think their brains can handle it, but they are limited due to the nurturing of so many conflicts of thought. It's funny, only it's kind of sad; they have more potential than this?

Autor: Lance Winslow Lance Winslow
Level: Platinum
Greetings to Everyone, I am a retired Franchisor, Business Consultant, Philantropist and I run a Think Tank, as well as do a lot of Traveling, ... ...

Lance Winslow is a public speaker and gives professional interviews to various news agencies and Internet Companies Lance Winslow Lance Winslow is also available by appointment; PBS Special with Lance Winslow/

Added: February 7, 2009
Source: http://ezinearticles.com/

Meteors and Meteorites, A Public Concern

Back in the early seventies when astronomy was a fairly new hobby for me, it dawned on me that there were more people worried about getting your order right at your local drive through restaurants than worried about Earth getting hit by a near Earth object. What are near Earth objects? NEO's are meteors, and or asteroids, comets that come within one astronomical unit of the Earth.

Back in the late seventies the movie "Meteor" was made starring "Sean Connery", "Carl Malden", "Brian Keith" and "Natalie Wood". Then in the nineties several more movies were made on the subject. Public awareness has been raised by these movies and by "Comet Shoemaker Levy 9". smashing into Jupiter, but in my opinion the most realistic disaster scene portrayed was in the movie "Deep Impact". The impact and tsunami scene was very realistic but a little slow.

One scene I disagree with is when the teenagers outrun the tsunami with a motorcycle. Its just not possible. If you have ever watched a meteor shower--Some people call them shooting stars--then you know how fast they really travel. Now imagine a 2 mile diameter meteor slamming into the Earth at that speed. There is no time to react.

Back in May of 2005 I was at a NASA exhibit at Akron Fulton Airport. I cornered two NASA scientists, we were talking about meteorites. They told me "Most Meteor sizes range from about the size of your fist to a grain of sand and are harmless". And "When a meteor hits our atmosphere its like slamming into a 13 foot thick wall of high grade concrete." If it survives that, you get a meteorite buried in the ground somewhere hopefully and not anything important. The best way to watch a meteor shower is with wide field binoculars.

Autor: Jeff Nash Jeff Nash
Level: Basic
Hi my name is Jeff a.k.a. interstellaryeller. I am 50 years old and enjoy astronomy and astrophotography.I enjoy the outdoors, and pets and animals.I like ... ...

Astronomy Pictures, Guide for Telescope Set Up,Photography.
http://www.squidoo.com/interstellaryeller

Added: February 6, 2009
Source: http://ezinearticles.com/

Lunar Phase Pro - How Lunar Phase Pro Takes Moon Watching to Another Level

Watching the moon has always been a passion of mine. I wouldn't call myself an expert, just a hobbyist. Catching a glimpse of a big beautiful harvest moon tends to take my breath away. For the amateur moon watchers out there like me, it's always been a guess or a lot of hard work to find out what kind of moon will appear and when. Now, thanks to LunarPhase Pro, moon watching just got a lot easier and more educational. Here are three features of LunarPhase Pro that will take your moon watching to the next level.

PHOTO REALISTIC IMAGES

LunarPhase Pro is a software toolkit with many stunning features to make your moon watching more productive. One of these great features is the ability to see near photo-realistic views of the Lunar surface via the Lunar Explorer utility. These views can also be printed as custom built maps. Maps can also be oriented to match the view through your telescope or binoculars. Zooming and panning is smooth, but when zoom in all they way there is a little image quality loss. A new feature that has recently been added to LunarPhase Pro is the ability to display very high resolution Moon charts. These have to be downloaded but LunarPhase Pro handles that for you. You can save them for viewing offline at your own convenience. All maps can be printed out.

LUNAR LIBRATION

One very nice feature is that the software allows you to produce a high resolution animation of lunar libration, the up/down, left/right wobble the Moon goes through over the course of a month, providing you with a very nice moving image of the Moon shifting in all directions. You can set the dates very easily and watch how the moon changes over time. This is a very interesting feature. LunarPhase Pro corrects the 3D maps for this so you are able to see the Moon exactly as it appears in the sky.

TOP DOWN VIEW

Another great addition to LunarPhase Pro is the software's top-down view. With this you are able to view all the features of the Moon that we can't see here from Earth. You can zoom in to look at craters and maybe find a good spot to build your house one day.

LunarPhase Pro doesn't put you on the moon but with its robust set of features, it provides a whole new experience for Moon watchers. And the price isn't bad either. It starts at around $50 and is even cheaper if you opt for the downloaded version. The usefulness of LunarPhase Pro ranges from the experienced to the amateur. You can also download the demo version and try it out first. You can learn more about LunarPhase Pro by visiting www.lunarphasepro-review.com.

Autor: Chase Bowers

Chase Bowers is photographer, videographer and media specialist currently working at an Advertising Agency. He is finishing up completing a review of LunarPhase Pro. For more information and other reviews please see http://www.lunarphasepro-review.com

Added: February 4, 2009
Source: http://ezinearticles.com/