Mass: 1.99 x 10 Diameter : 1 392 000 km Temperature of the surface : 5200 i Ê Time of rotation : 25h (poles) 34h ( equator) The sun shines and warms our planet, without it life on Earth would be impossible not just for human , but for microorganisms as well. The sun is the main (though...

Near-Earth Objects are comets and asteroids that have been pushed by the gravitational attraction of nearby planets into orbits that allow them to enter the Earth's neighborhood. They are about 4.5 billion years and can range in size from pebbles or lumps of ice, to rocky or icy worlds nearly 1,000...

Earth-Like Planet Discovered 50 Light Years Away European astronomers have discovered a planet less than 50 light years away. This planet has come to be known as a sort of super Earth. It takes only ten Earth days to orbit its sun (much like our own) and the surface of the planet is scorc...

Voyage to the Planets The solar system holds many scientific mysteries. It is a universe full of wonder. What exactly is it? How was it created? When? Why? These are just a few of the many questions we ask ourselves all the time. In the following, the mysteries of this solar system, how...

The Solar System consists of the Sun, the nine planets and their satellites; the comets, asteroids, meteoroids, and interplanetary dust and gas. It is composed of two systems, the inner solar system and the outer solar system. The inner solar system contains the Sun, Mercury, Venus, Earth and Ma...

Saturn Saturn is the sixth planet in our solar system and is the second largest planet. The only planet larger then Saturn is Jupiter. Saturn is commonly noted for its phenomenal system of rings surrounding this gaseous planet. It is also one of the outer planets. Saturn's pe...

The human conceptualization of the solar system dates back to the beginning of time. The early Egyptians worshipped the sun as a source of life and then the area called space was becoming a curiosity to humans. Throughout history, our knowledge of the solar system has increased and there is stil...

Jupiter And It's Moons Jupiter, the largest of the Jovian planets, reigns supreme throughout the solar system. Named after the Roman god Jove, the ruler of Olympus; "Jupiter is the fifth planet from the sun and is also the largest planet in the Earth's solar system. It is ...

Alex Provencal April 19, 2004 Professor Mobius Comets: The Known and Unknown Long ago comets were understood by people to be a sword or as a symbol for death, while others thought it was the appearance of the head of a woman with streaming hair which symbo...

ASTRONOMY 104 #1) (A) Issac Newton's Law of Universal Gravitation is: Two bodies attracted to each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. This means that the further apar...

Space Rock . Eros Eros is an asteroid but can be called a minor planet. It orbits the sun that sometimes causes it to closely pass as 14,000,000 miles next to Earth. Scientists believe that Eros comes this close to Earth every 31 years. The last time Eros came close to Earth was back in 19...

Eight Scientist Research Since the dawn of time, man has yearned to know the origin of existence, how life was started, and the source of creation. Many scientists, from ancient Greece to modern civilization, began the search for answers by first studying our solar system, mapping the s...

THE BEGINNING OF ASTRONOMY Early races believed that the earth was flat and stationary, with the sky rotating round it once a day. The early races also believed things that sound weird to us today like the Vedic priests of India believed that the earth was supported upon 12 massive pillars and duri...

THE BEGINNING OF ASTRONOMY Early races believed that the earth was flat and stationary, with the sky rotating round it once a day. The early races also believed things that sound weird to us today like the Vedic priests of India believed that the earth was supported upon 12 massive pillars and duri...

Towards the end of our solar system lies the smallest of all the nine planets, Pluto. In 1905, Percival Lowell, an American astronomer, found the force of gravity of some unknown planet to be affecting the orbits of Neptune and Uranus. In 1915, he predicted the location of a new planet, and began se...

Synchronous Orbits of Communication Satellites The orbits of communication satellites vary for the type of satellite it is. The type of satellite it is depends on the work it is designed for. For example spy satellites (and most of the LEO satellites) need to be close to earth to take clearer pi...

In the late 1400's to the mid 1500's, people believed that the earth was the center of the universe. Ptolemy stated that the Earth was stationary and that the sun, moon, planets, and stars revolved around imaginary points, which in turn revolved around the Earth. Copernicus knew that natu...

Can the Earth be the only place in the Universe that harbors life? Most astronomers don't believe this is true. Certain statistics in the Universe provide evidence that living beings may be common place through out the universe, on planets of other stars besides the sun. In this paper I plan to dis...

Throughout the history of astronomical theory, there have been two main theories on the setup and placement of the heavenly bodies within our observed universe. The two theories are the geocentric model, our earliest theory, wherein the earth is at the center of everything, and everything rotates ar...

"For better or worse , education is a process that involves resvising the ideas , beliefs, and values people held in the past." Education, which play a increasing crucial role in the contemporary society where there is so much information that it is difficult to distinguish the right ...

A Comet looks like a star with a tail. Some comets do not have tails, and look like hazy, round spots of light. But most comets have three parts; a nucleus, a head, and a tail. The bright central nucleus may be nearly as large as the earth, which is about 7,900 miles in diameter. The head, or c...

For 2000 years, Europeans believed earth was at the center of the universe. This is also known as the Ptolemaic theory. Nicolaus Copernicus, a Polish astronomer in the late 15thearly 16th century was unsatisfied with the belief that all heavenly bodies revolve around the earth. So in 1512, Copern...

The Discovery of Kepler Using the precise data that Tycho had collected, Kepler discovered that the orbit of Mars was an ellipse. Man being, as Kepler believed, made in the image of God, was clearly capable of understanding the Universe that He had created. Moreover, Kepler was convinced that God h...

I am often asked this question by members of the general public, and, since I am known to most people who meet me as an enthusiast for space exploration and colonization as well, the question is put to me even more forcefully. Let us face this question head on. Firstly, there are several lessons to...

Day after day, we wake up and find ourselves surrounded by life. Most of us encounter life in the human form; when we go to school, to work or to the supermarket. Other times we run into different forms of life, that do not take the human form, and that do not live in the same environment humans liv...