Physical Science
By: Alison Bowler
Plutonium Symbol: Pu Atomic Number: 94 Atomic Mass: 244.0 amu (atomic mass units) Melting Point: 639.5 C (912.65 K, 1183.1 F) Boiling Point: 3235.0 C (3508.15 K, 5855.0 F) Number of Protons: 94 Number of Electrons: 94 Number...
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A brief history of chemistry
By: Helena Whyte
Even though the Greek philosopher, Democritus, was the first person to say that matter is made up of very small, indivisible particles that he called atomos, John Dalton is considered the father of chemistry. John Dalton proposed the modern atomic theory in 1808. Investigators learned...
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By: Imonikhe Ahimie
SETI@home, a specialised segment of the Search for Extra Terrestrial Intelligence, SETI, is one of the most innovative and successful programs in the history of the search for ETI. The program, a volunteer computing program, was launched on 17th May 1999, just over a...
By: Perry McCarney
The acronym SETI stands for the Search for ExtraTerrestrial Intelligences. The SETI League, Incorporated is a non-governmental, non-profit organization with members ranging from professional astronomers to grassroots amateur enthusiasts, corporate research divisions to University astronomy departments. The fundamental desire of all members is to...
By: Meghan Rizzo
In 2008 Dr. Edgar Mitchell of the Apollo 14 mission clearly stated that intelligent life does exist on other planets. Methane gas detected on Mars in January of 2009 suggests that life might be present there. Although that life would most likely include simple bacteria...
Circular motion physics concepts
By: Chandra Wijaya
An object moves around a circle is called in circular motion. Sometimes the speed of the object is constant. This motion is called uniform circular motion. There are several important terms in circular motion. I will discuss them subsequently. The first is the frequency. Suppose...
By: Imonikhe Ahimie
Given a Search for Extraterrestrial Intelligence, SETI, it follows of necessity that a means of communicating with such intelligences, once discovered, ought to be available. This branch of SETI is known as Communication with Extraterrestrial Intelligence, CETI. If communication is defined as a means...
By: John Traveler
In a figurative sense, the Search for Extra Terrestrial Intelligence(SETI) predates the dawn of human history, ancient humans perceiving the stars of the night sky were gods and deities watching over them. To more primitive humans the stars were representative of the other world, heaven...
By: Imonikhe Ahimie
The Search for Extraterrestrial Intelligence, SETI, is a science program that has been ongoing for just over half a century and it has as its basic purpose the investigation of our galaxy and the wider universe in an effort to determine whether or not...
57 alien species: Are we alone in the universe?
By: Jonte Rhodes
Many people believe that aliens exist and some also believe that aliens are visiting our planet regularly. There are certainly thousands of sightings and encounters reported each year, although how many of these can be substantiated is not clear. Certainly most if not all are...
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