.... governing planetary motion were discovered, and the orbits of the planets around the Sun were calculated. In the 17th century, astronomers pointed a new device called the telescope at the heavens and made startling discoveries. But the years since 1959 have amounted to a golden age of solar system exploration. Advancements in rocketry after World War II enabled our machines to break the grip of Earth's gravity and travel to the Moon and to other planets. The United States has sent automated spacecraft, then human-crewed expeditions, to explore the Moon. Our automated machines have orbited and landed on Venus and Mars; explored the Sun's environmen .....

.... comet has. Another feature of a comet is a long tail. This is caused by materials breaking off and expanding. They expand into an enormous escaping atmosphere called the coma. This becomes at least the size of our planet. With the comet going so fast, these materials are forced behind the comet, forming a long tail of dust and gas. Comets are cold bodies. We see them only because the gases they are composed of glow in the sunlight. All comets are regular family members of the solar system family. They are bound by gravity to a strict path around the solar system. Scientists believe that all comets were formed of material, originally in the outer part .....

.... possibility that we may share the universe with other intelligent beings. On June 24th, 1947, while searching for the remains of a downed marine C-46 transport lost somewhere in the mount ranier area, a young idahoan businessman named kenneth arnold spotted something that would change his life forever. Just north of his position flying at an altitude of 9,500 feet and an unprecedented airspeed of 1,700 mph he spotted nine circular aircraft flying in formation and according to his estimate the aircraft were approximately the size of a dc-4 airliner ( jackson 4). This account was the first sighting to ever receive a great deal of media attention. This sighti .....

.... the way we live our lives. The majority of the population seems very reluctant about the knowledge of where the water we use actually originated before it entered our faucets. When understanding the fundamentals of water and it’s minerals, it is crucial to develop a better understanding of the whole process of water and how it is made accessible to us every day of our lives. According to the Water Quality Association, approximately “15percent of the Canadian population relies on individually owned and operated sources of drinking water, such as wells, cisterns and springs. On the other hand about 80percent of the population receives water from a co .....

.... by having banned the instruction or even the mention of "ungodly" evolutionary thinking in schools. With today’s social and political climate, this question is back with greater force than ever. This is why this subject is more important now than ever. In Jay Gould’s book The Panda’s Thumb, an overview of and an argument for Charles Darwin’s evolutionary thinking is conducted with flowing thoughts and ideas. This essay titled "Natural Selection and the Human Brain: Darwin vs. Wallace" takes a look directly at two hard fought battles between evolutionists and creationists. Using sexual selection and the origins of human intellect as his proponents, Gould argu .....

.... you can find an easy way of downloading MP3s it is very possible that you may never want to buy another album again. MP3 is only one of several types of digital CD quality music that can be saved and also played on your personal computer. I personally like MP3 the best because I find them to sound better. To play these files you need a MP3 player. There are a couple different types of players out on the internet. The most common player for MP3s is a program called Winamp. Winamp can be found at Winamp.com. I personally like this player because it has a digital equalizer, which gives you more control over the sound of the music. This player reads the .....

.... have beneficial effects, raising the level of H-D-L cholesterol -- the "good" cholesterol -- in the blood. Doctors participating in the Physicians' Health Study reported recently in the Journal of the American College of Cardiology that one drink a day can help lower the risk of heart disease. But when consumption surpasses two drinks a day, risks increase for some kinds of cancer. Doctors at UT Southwestern Medical Center at Dallas say before you start drinking for your health, talk to your doctor. For some people, the risks of alcohol outweigh the benefits. And remember that while one drink a day can be helpful, more can be harmful. Could a drink a day keep .....

.... first distinction between children who were cretins (later to be found to have hypothyroidism) and what he referred to as "Mongoloids." Down based this unfortunate name on his notion that these children looked like people from Mongolia, who were thought then to have an arrested development. This ethnic insult came under fire in the 1960s from Asian genetic researchers, and the term was dropped from scientific use. Instead, the condition became called "Down's syndrome." In the 1970s, an American revision of scientific terms changed it simply to "," while it still is called "Down's" in Europe. There are three main types of . The vast majority of children with .....