By: Stefam Miller
Planets OverviewOur solar system consist of the sun, nine planets (and their moons), an asteroid belt, many comets and meteors. The sun is the center of our solar system, with the planets, their moons, comets, asteroids, and other gases and rocks all in orbit around...
By: Dianne Paterson
Theories of the origins of the UniverseSince the beginning of human history, Man has sought to understand the world around him. The answers he has come up with over the years have been varied and only infrequently based on observed fact.The Egyptians had numerous...
Exploring the ozone layer
By: Nancy Houser
A 2006 NASA study has extended the anticipated time for the full recovery of the ozone layer over the South Pole, and scientists have concluded that an additional twenty years will be necessary. A new computer model developed by scientists from NASA, The National Oceanic...
By: Ernest Capraro
"Halogens" is the name for a family of chemical elements. They are found in group seven of the periodic table, the second column from the right. They are all electronically similar, having seven electrons in their outermost (valence) shell. Because this is only one electron...
By: Hoc Trinh
When a nucleus undergoes nuclear fission, the nucleus splits into two smaller nuclei, and two or three neutrons are ejected. An incredible amount of energy is released in the form of heat and gamma radiation. The radiation comes from the two new atoms; they are...
How big is a mole in chemistry?
By: Ernest Capraro
Moles, of course, are furry critters with poor vision that dig up gardens and golf courses. They're smaller than your average cat. For students of chemistry, however, the mole is a magic (and often mysterious) number. The mole is nothing more than a counting number...
By: Ernest Capraro
To the average person, the word "aromatic" usually means "pleasingly fragrant". For chemists too, it held this meaning originally. Over time, chemists found that certain organic compounds were much more stable (unreactive) than was normal for similar chemicals. Because many of these molecules were also...
By: Hoc Trinh
Nuclear fusion is the process of two nuclei joining together to form a heavier nucleus. It is accompanied by the release or absorption of energy. The fusion of Deuterium and tritirium to produce helium is the reaction that is constantly going on in the sun...
By: Perry McCarney
Yes, quite obviously so, except perhaps to the most myopically anthropocentric. Why? Because it would be extremely presumptuous to think that in the entire universe the only planet capable of enabling the development of life is our own. The question asks, "could there be", not...
By: Bryan Belrad
The Modern GenesisThe Big Bang Theory is a wonderful story, on many levels. It is a story of human achievement. It is a story of the wonder of discovery. It is the story of our closest pass to understanding the truth of the universe in...

 

1 98 99 100 101 102 547
CHOOSE YOUR SCIENCES 360 TOPIC: