The NASA 2011 budget and the future of America's Manned Space Program
By: N. David
Under President Obama's 2011 budget proposal, NASA's Constellation program is canceled, and NASA is given the outline for a new direction. Constellation was supposed to be the program that got America back to the moon and beyond. Does its cancellation mean the end of American...
By: Amish Patel
GAMMA RAYS ALL THE WAY! Gamma rays are the most important light source of energy in modernsociety. Well, what on earth are they? Gamma rays are a type of electromagnetic wave with the smallest wavelengths and have the most energy from any other waves in...
By: Brandon Romines
What separates terrestrial planets from Jovian planets is their composition. Earth and Mars are both examples of terrestrial planets, all of the planets in the inner solar system are terrestrial. Terrestrial simply means that the planet is made up primarily from rock, with little of...
By: Ernest Capraro
Propane and natural gas have a lot in common. Both are used as fuels, are gaseous, can be stored in tanks and pumped through lines, and have similar safety hazards associated with them. To compare how they are both similar and different, take a look...
Astronomy: What is the sun and what is it made of?
By: Wes Kelly
Among the many mysteries of the life of Italian Renaissance priest Giordano Bruno (1558-1600) was how he made the inference that the sun was a star and that the stars were all suns. Although he was among the few Europeans of his time who believed...
Do you believe that aliens have already visited our planet?
By: Rob Gray
The idea of aliens has captured the imaginations of some and put terror into the hearts of others. The image of little green men descending from the sky to greet us with some strange alien culture does not cause so much fear as the idea...
A biography: Nikola Tesla
By: T.S. Garp
Some say he was a man born out of time, a man born too soon, that his inventions changed the world, and that he was an unappreciated genius who wanted to give free energy to people. Nikola Tesla (July 10, 1856 – January 7,1943)...
The first humans on Mars
By: Aldrin A Wilding-West
The Mars Cycler – The Future of Mars Exploration and Colonization In the early 1980s a celebrated astronaut and scientist began work that may one day make his initial concept a reality. His dream was to create a ‘cycler’ spacecraft that used the gravitational...
The future of the American Space Exploration Program
By: Aldrin A Wilding-West
That’s One Giant Leapfrog For Mankind President Obama’s budget shows plans to leapfrog the moon, putting an end to the Constellation programme. Many believe that the money should be pushed back into research that might yet help to save our planet. But what...
Alternating current (AC) and direct current (DC): A simple explanation
By: Jerry Walch
My wife, the retired schoolteacher, would warn you that I'm not capable of giving a simple explanation no matter what the subject. I've taught adult continuing education classes in residential electrical repair and I've tried to practice the K.I.S.S. (Keep It Simple...

 

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