Physical Science

The Mars Reconnaissance Orbiter is a robotic spacecraft currently orbiting Mars at an altitude roughly 300 kilometers above the surface of Mars.  The initial orbit around Mars was highly elliptical, with a closest approach of 426 kilometers and a furthest…
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A comet is an object that resembles a fuzzy star; most travel through the solar system on an elliptical (oval or egg shaped) orbit. The time it takes a comet to make a complete orbit is called its period (Some…
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The Milky Way Galaxy is a spiral galaxy whose arms are literally full of life. The arms of our Galaxy are the locations in which new stars are formed. The life stages of a star, however, are what categorizes stars….
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Author’s note: All credited material herein is in the public domain. A sincere attempt has been made to represent it accurately while integrating it into the overall theme. All uncredited work is from my own experiences as a graduate engineer…
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I often reflect upon the who, what and why of the unidentified flying objects (UFOs).  I know that they exist because I have experienced a close encounter directly overhead as I stood in my back yard in North Hollywood, California. …
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John Bevis: The Discovery of the Crab Nebula and the Danger of Falling Stars John Bevis (November 10, 1675-November 6, 1771), an amateur astronomer, was a physician who discovered the Crab Nebula in 1731. A nebula is formed as a…
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Where do UFOs come from?  Since 1947 when Kenneth Arnold first reported his sighting of flying disks over the Cascade Mountains in Washington, the mystery of these unidentified flying objects has intrigued the public. The 1950s were the flying saucer…
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Uranus has the funniest name among the planets in our cosmic neighborhood. But after the tired jokes fade away, some interesting facts can be elucidated from this fascinating planet named after the Greek god of the sky.   On March…
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Stars are one of the most amazing and awe-inspiring objects in the universe. Stars are living things, and, like all living things, when stars die they contribute to the birth and growth of other things, namely other stars. There are…
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Mars is the fourth planet from the sun .It is the 2nd closest planet to the earth.Mars is about1/2 the diameter of earth. It takes 687 days for mars to make a complete rotation around the sun. A martian day…
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