By: Patrick Sills
The dream of interstellar space travel has been around for decades. One could argue that in the case of a brilliant few, this dream has existed for centuries. In regard to this fanciful topic, and whichever school of thought is favored, one common belief serves...
By: Blaise Pascal
While most people have some idea what matter is, the may not have any idea what antimatter is. Antimatter may sound like science fiction, perhaps because the word has been used frequently in science fiction, but it is in fact real. Interestingly enough, matter and...
How to convert GPM to velocity
By: Blaise Pascal
Units are used to help quantify and define physical measurements. Some units are very easy to convert while others are a bit more complicated. In the case of GPM (gallons per minute), you sometimes need to convert this into flow velocity as this quantity may...
Space technology future: Non-polluting rockets for space exploration
By: Anthony Megna
The future of space exploration looks bright indeed with some of the ingenious non-polluting rockets on the drawing board! Leading the way is the solar-sailor, a spaceship that uses the power of the sun the explore the solar system. Just as the ocean explorers of...
What are formal charges?
By: Ernest Capraro
Formal charge can be calculated for any atom in a given Lewis Dot Structure. The sum of all formal charges in a structure must equal the total charge of the structure. Formal charges are a bookkeeping tool, used to evaluate Lewis Dot Structures. Formal charges...
Why the Search for Extraterrestrial Intelligence (SETI) may not be a good idea
By: D. Vogt
There are essentially two arguments for why the Search for Extraterrestrial Intelligence (SETI) may not be a good idea: it is a waste of funds, and it may end up attracting unwanted attention from hostile or exploitative alien civilizations. On balance, as can be quickly...
Kalpana Chawla: A biography
By: D. Vogt
Kalpana Chawla (1962-2003) was an Indian-American aeronautical engineer who became a NASA astronaut, flying on the Space Shuttle between 1997 and 2003. She was aboard the shuttle Columbia in 2003 when it was tragically destroyed during re-entry into Earth's atmosphere. - Early Life and First...
Force: Concept explained
By: Chandra Wijaya
A man was driving a car in a street. He pushed the brake right in front of his house. Turned off the machine and pulled the hand brake. He then opened the car door, took his bag and got down. He slammed the car's door...
What was the Arecibo Broadcast?
By: Perry McCarney
Messages to outer-space have become somewhat contentious lately. Are we seeking technologically superior, benevolent extra-terrestrial species or setting ourselves up as victims to more scientifically and militarily capable predators? While the Arecibo broadcast was the first electromagnetic METI (message to extraterrestrial intelligences), only preceded by...
By: Imonikhe Ahimie
SETI, or the Search for Extra Terrestrial Intelligence, is a collective designation for a series of experiments designed to ascertain whether or not there is intelligent, communicative life in outer space. The search has been carried out, mostly, by trying to detect radio transmissions...

 

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