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Astronomy is the science of studying objects and phenomena that exist outside of Earth's atmosphere. This includes other planets, stars, black holes, comets, gravitational pull, and more.

Astronomy is one of the oldest sciences on the Earth; even in prehistoric times, people looked at the stars. The "heavens above" have always been a fascination to people, and even the earliest civilizations were tracking the movement of the stars. With the invention and development of telescopes, astronomy became a growing modern science that is studied vastly today.

Astronomy was once studied simply by observing the sky. People would make observations about star placement, the sun's movement in the sky, and other things they could notice. As technology and thought evolved, we theorized about our place in the universe and observed celestial bodies with advanced equipment like telescopes. Today, space travel is available to study things away from the Earth at close range.

Today, the field of astronomy strives to literally find the answers to the universe. Astronomers work to find answers to big questions: What is the origin of the universe? Is life outside the Earth possible? If so, where is it, and what is required for it? Astronomy covers the field of studying not only the history of our universe, but also the future as well.

There are many subfields of astronomy based on what specifically is being studied (for example, studying planets or stars), and with the discovery of new things in the universe, new fields open. New technology is also always being researched and created, so astronomy is a rapidly growing field with new advancements every day.

A web directory for astronomy can help one keep up on this ever-changing and exciting field, comprehensively cataloging online resources together to allow reference to many different astronomical topics.

Stars, galaxies, black holes and comets are only a few of the wonders of the Universe, and we discover more of them with every day that passes. People have always been fond of discovering new things and understanding what seems to be beyond comprehensiveness. The Outer Space has always consisted in one of the biggest mysteries the modern world is confronting with, and this is why the development of space ships took place, in order to find answers to some of the oldest questions: Are there any other forms of life in the universe besides us?

There is a very strong connection between these two sciences, Physics and Astronomy: Astronomy wouldn't have been a science today without the precious information that Physics scientists provided over the years. Gravitation, lenses, electromagnetism or the frictional force are only a few of the major discoveries that significantly contributed to the development of the Astronomy, especially when talking about space ships and telescopes.

If you want to become a Physics scientist or why not even an astronaut, you have to be familiar with the latest discoveries and essential pieces of information regarding these two sciences. Instead of browsing over the Internet for the information what you need related to Physics, Astronomy, Outer Space and everything that they include, choosing a web directory is the best option because you can find what you are looking for in a matter of seconds. It is not only easy but also simple to find very accurate information.

is a branch of the physical sciences, which is concerned with the motion of matter in the physical world. As one of the greatest expanding branches of science today, the study of matter on smaller and smaller levels has led scientists to reconsider long-held theories, which are being found to be more intricate as more is discovered. A basic tenet of physics, the First Law of Thermodynamics to be precise, asserts that energy is neither created nor destroyed, but rather merely changes form. For instance, when chemical bonds are broken during chemical reactions, the energy that once held matter together may be released in the form of "heat" which will proceed to affect the environment into which it is released. Chemistry and physics are branches of science, which overlap in many ways, particularly related to chemical reactions on an atomic level.

Physics is also closely related to engineering and other applied sciences, as its study has broad applications in ways that "work" can be made easier in our lives. Whether it is from the use of wheels, pulleys, or other "simple machines," or by analyzing the amount of weight a bridge can sustain, physics' concern with the redistribution of energy and matter throughout the universe strongly influences our daily lives.

Historically, astronomy and physics have been closely related, as many of the first formal discoveries were related to the formation of mathematical equations that could predict the motions of planetary bodies based on the gravitational pull of large celestial bodies. Physics has played a large part in the modernization of the man's view of his role in the universe. We no longer believe the earth to be flat, or the center of the universe thanks to physics.