By: John Traveler
High on a plateau in north eastern California, boarded on the east by the most northern extent of the Sierra Nevada and to the west by volcanic peaks of the southern most extent of the Cascade range, is a little valley named after a creek...
Introduction to vectors in physics
By: Chandra Wijaya
We classify quantities into two major groups in Physics. They are vector quantities and scalar quantities. What is the difference? The first ones have both magnitude and direction. The later have only magnitude. Magnitude is the number mentioned for a measure. The examples for a...
By: Elton Gahr
It's nearly impossible to imagine just how big of an event it would be if SETI found a message from another species. Intelligence, somewhere else in the universe, calling out to us in the darkness. It would change everything. Similar to the first images of...
By: John Traveler
What goes up must come down. It's a true statement, but the missing argument of the equation is when? Ever since the Russians launched the first Sputnik in 1957, the United States and Russia have been launching satellites into low, medium, and geosynchronous orbits. In...
Extraterrestrial life: Fact or fiction
By: Tom Barnes - 518296
Throughout the ages man has gazed into the stars and questioned the possibility of life outside of Earth. Scientists and philosophers have spent lifetimes searching to find the existence of extraterrestrial life. However, this search has posed more questions than it has answered. Can...
By: Elton Gahr
When most people think of SETI they think of the radio telescopes that search for signals from extra terrestrials, but since we have no facts about how these aliens might choose to communicate and so we search in every way that we can think of...
Facts about Venus
By: Gillian Taber
Somewhere on Earth there should be a little sign that says "Earth - Twinned with Venus". The fact is that, due to the similarity in size and composition, Venus and Earth are sometimes referred to as "twins". Venus is also the closest planet to Earth...
By: John Traveler
By any account Enrico Fermi was a brilliant man, and by most accounts a genius. He was born in 1901 and lived in an epoch of human discovery and enlightenment unparalleled in history, and probably one that will not be matched for generations to come...
Types of stars
By: Joe Regalia
Stars are one of the most timeless furnishings of our universe. Age after age they have been permanent fixtures in our sky, being the base for countless religions, wishes, and art. Yet most people do not realize exactly what these sparkling lights are, and...
What is included in interstellar messages?
By: T. Scott Randolph
Unfortunately, I don't think we have to worry about what we will put in an interstellar message. I think the much larger concern is what we have already put in these messages. Ever since we have started broadcasting radio and even more so television, many...

 

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