Comets are small, fragile, and irregularly shaped. Most are composed of frozen gas. However, some are composed of frozen gas and non-volatile grains. They usually follow very strict paths around the sun. Comets become most visible when they cross the sun. This also applies to people who view comets with telescopes. When a comet gets…
His Life Throughout history people have always looked up at the sky and wondered about the universe. Some just wonder while others attempt to solve this mystery. One of the people who had endeavored to solve it was Nicolaus Copernicus. Copernicus was born in the present day town of Torun, Poland in February of 1473.…
Neptune is the outermost planet of the gas giants. It has an equatorial diameter of 49,500 kilometers (30,760 miles) and is the eighth planet from the sun. If Neptune were hollow, it could contain nearly 60 Earth’s. Neptune orbits the Sun every 165 years. It has eight moons, six of which were found by Voyager…
Mercury is the closest planet to the sun. Its average distance from the sun is approximately fifty-eight million km and it’s diameter is 4875 km, making it the second smallest planet in our solar system. Its volume and mass are about 1/18 that of the earth and its average density is approximately equal to that…
Gamma Rays are Waves on the electromagnetic spectrum that has a Wavelength of 10 or Higher and 11 down. Gamma Rays are produced in labs through the process of nuclear collision and also through the artificial Radioactivity that accompanies these interactions. The high-energy nuclei needed for the collisions are accelerated by such devices as the…
All black holes are formed from the gravitational collapse of a star, usually having a great, massive, core. A star is created when huge, gigantic, gas clouds bind together due to attractive forces and form a hot core, combined from all the energy of the two gas clouds. This energy produced is so great when…
Aquarius can be found in the SE sky in autumn, especially October. A dark night is especially helpful because many faint stars make up Aquarius. This will help to make the fainter stars stand out because it’s hard enough to see a shape in Aquarius. Up and to the west of aquarius, pegasus can be…
Salinity in both the rivers and on the land is one of the main and most costly results of over clearing and irrigation. Salinity is caused by changes in the delicate balance between surface water and groundwater systems. A small increase in the infiltration of water from the topsoil to the groundwater, due to rainfall…
The geography of the Neanderthals domain was quite odd. 230,000 years ago Europe was filled with caves, marshes, and grasslands. It was a very harsh and cold wilderness. The Neanderthals were in existence right in the middle of the Ice Age, and although occasional warm periods would create subtropical conditions as far north as England…
The third president of the United States, a diplomat, statesman, architect, scientist, and philosopher, Thomas Jefferson is one of the most eminent figures in American history. No leader in the period of the American Enlightenment was as articulate, wise, or conscious of the implications and consequences of a free society as Thomas Jefferson. Thomas Jefferson…
The composer of some of the most influential pieces of music ever written, Ludwig van Beethoven created a bridge between the 18th-century classical period and the new beginnings of Romanticism. His greatest breakthroughs in composition came in his instrumental work, including his symphonies. Unlike his predecessor Wolfgang Amadeus Mozart, for whom writing music seemed to…
A sexually transmitted disease is not the same as genital disease. Most genital diseases are not caused by sexually transmitted organisms. But most sexually transmitted infections do involve the genitals. Infection of the rectum, throat, and the eye are also common. A lot of sexually transmitted diseases spread from a single place and produce sores…
Small pox, which was once the most feared disease known by mankind started out in the days of Christopher Columbus. The disease set out to change the lives of the people in the worse way. It became known as an epidemic disease that ended up killing hundreds of people. Small pox started out in Hispaniola…
Insomnia Insomnia is a chronic sleeping disorder in which it is very difficult to start and continue sleeping. One of the other symptoms of insomnia that is most recognized is waking up repeatedly in the middle of the night. Lack of sleep leads to two other things, daytime fatigue and restlessness. These are bad on…
Tuberculosis (TB) is an infectious disease caused by a germ (bacterium) called Mycobacterium tuberculosis. This germ primarily affects the lungs and may infect anyone at any age. In the United States, the number of TB cases steadily decreased until 1986 when an increase was noted; TB has continued to rise since. Today, ten million individuals…
Inflammatory bowel disease (IBD) is a group of chronic disorders that cause inflammation or ulceration in the small and large intestines. Most often IBD is classified as ulcerative colitis or Crohn’s disease but may be referred to as colitis, enteritis, ileitis, and proctitis. Ulcerative colitis causes ulceration and inflammation of the inner lining of a…
Does it hurt to move your arm? Is it tender and radiating pain to your neck and finger tips? Do you have a fever? If you answered yes to two or more of these questions then you may have typical joint injury called bursitis. Bursitis is an inflammation of the bursa that is easily prevented,…
Angina pectoris is a medical condition that literally means a choked chest. The victim feels acute pain in his chest for a few seconds, and then it goes away. This occurs when myocardium cells, the muscle portion of your heart, are temporarily denied oxygen. At this stage they do not die, but maybe weakened. If…
Beta-carotene is a member of the carotenoid family and has over 500 relatives. Carotenoids are yellow-to-red pigments found in all green plant tissues and in some species of algae. So far 21 different carotenoids have been found in human blood. The most abundant ones are alpha-carotene, beta-carotene, lutein, lycopene, cryptoxanthin and zeaxanthin. A molecule of…
What is the Disease? ALS is an extremely deadly disease affecting the nerve cells that control the victim’s voluntary muscles. These nerves shrink and eventually die, leaving the muscles without stimulation. As these muscles go without stimulation, they too eventually shrink and die. The victim progressively weakens to the point of complete paralysis of all…