What is a black hole
By: John Schmidt - 580649
It seems as though no good outer space science fiction book or movie is complete without weaving a black hole into the story line. Black holes are so mysterious and misunderstood they allow the authors to write outrageous and exciting plots such as time and...
States Matter Gas Liquid Solid Plasma Superfluid Super Fluid Bose Einstein Condensate
By: Ernest Washburn
It is agreed upon by physicists worldwide that there are five states of matter. The three common states that occur under "normal" conditions on earth are gases, liquids, and solids. The other two are plasma and superfluids (also known as Bose-Einstein Condensates). A state of...
Understanding the periodic table of elements
By: Martha Davis - 580038
The periodic table is an organization of all the known elements (including those only synthesized in a lab). Each box on the periodic table represents an element and includes the chemical symbol, atomic number, and average atomic mass. The chemical symbol is basically an abbreviation...
By: Patrick Boniface
The last human footprints on the moon belong to Eugene Cernan and as there is no atmosphere on the moon, those footprints will remain undisturbed for millennia. As Commander of the last moon mission of the Apollo program Eugene Andrew Cernan wrapped up an historic...
The Torino Scale and the likelihood of asteroid impacts
By: D. Vogt
There are billions of small asteroids and comets in the solar system. Of these, only a small fraction actually cross Earth's orbital path, and only a small fraction of those are large enough to survive a descent through the Earth's atmosphere. Nevertheless, it is possible...
Astronaut profiles: Alan Shepard
By: D. Vogt
Alan Bartlett Shepard (1923-1998) was a pilot in the U.S. Navy, the first American astronaut in space, and the commander of the Apollo 14 mission to the Moon. He was decorated by the navy, by NASA, and with the Congressional Space Medal of Honor...
By: Terrence Aym
When NASA's Mars Reconnaissance Orbiter (MRO) mapped the tiny Martian moon, Phobos and beamed back photos of the small, potato-shaped satellite, a furor broke out amongst space buffs. There, on the surface in plain view, stood a large rectangular object that unmistakably resembled an artificial...
Astronaut profiles: Ed Mitchell
By: D. Vogt
Edgar "Ed" Mitchell (1930-present) was a NASA astronaut and engineer, who walked on the moon as part of Apollo 14 in 1971. Like other early American astronauts, he was recruited from research and test piloting duties in the armed forces. He also went on to...
Astronaut profiles: Gordon Cooper
By: D. Vogt
Leroy Gordon Cooper, Jr. (1927-2004), was an American astronaut and engineer. He flew into space twice, on the last of the Mercury spacecraft in 1963, and then again on Gemini 5 in 1965. He retired from the astronaut corps into work as an engineering consultant...
Astronaut profiles: Gus Grissom
By: D. Vogt
Virgil Ivan "Gus" Grissom (1926-1967) was one of the first astronauts in the American space program. During his brief career, he entered space twice, and was the second American in space, after Alan Shepard. Grissom was selected as the commander of the Apollo mission in...

 

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