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Bibcode print that page

The bibcode is an identifier used by a number of astronomical data systems to specify literature references. The bibcode was developed to be used in SIMBAD and the NASA/IPAC Extragalactic Database (NED), but is now used more widely, for example, in the NASA Astrophysics Data System .

wikipedia.org | 2011/4/27 2:57:12

Star print that page


A star is a massive, luminous ball of plasma held together by gravity . At the end of its lifetime, a star can also contain a proportion of degenerate matter . The nearest star to Earth is the Sun , which is the source of most of the energy on Earth. Other stars are visible from Earth during

Cold fusion print that page


The media reported that nuclear fusion was happening inside the electrolysis cells, [ 3 ] and these reports raised hopes of a cheap and abundant source of energy. [ 4 ] Hopes fell with the big number of negative replications, the withdrawal of many positive replications, the apparition of

Earthquake prediction print that page

An earthquake prediction is a prediction that an earthquake of a specific magnitude will occur in a particular place at a particular time (or ranges thereof). Despite considerable research efforts by seismologists , scientifically reproducible predictions cannot yet be made to a specific

wikipedia.org | 2011/9/16 20:52:44

Electron print that page


The electron (symbol: e − ) is a subatomic particle with a negative elementary electric charge . It has no known components or substructure; in other words, it is generally thought to be an elementary particle . [ 2 ] An electron has a mass that is approximately 1/1836 that of the proton

Jupiter print that page


The planet was known by astronomers of ancient times and was associated with the mythology and religious beliefs of many cultures. The Romans named the planet after the Roman god Jupiter . [ 14 ] When viewed from Earth , Jupiter can reach an apparent magnitude of −2.94, making it on

Global dimming print that page


Global dimming is thought to have been caused by an increase in particulates such as sulfate aerosols in the atmosphere due to human action. It has interfered with the hydrological cycle by reducing evaporation and may have reduced rainfall in some areas. Global dimming also creates a cooling

Top quark print that page

The top quark , also known as the t quark (from its symbol, t) or truth quark , is an elementary particle and a fundamental constituent of matter . Like all quarks , the top quark is an elementary fermion with spin - 1 ⁄ 2 , and experiences all four fundamental interactions : gravitation

wikipedia.org | 2011/8/9 9:13:45

Big Bang print that page


The Big Bang model, or theory, is the prevailing cosmological theory of the early development of the universe . [ 1 ] The theory purports to explain some of the earliest events in the universe. According to the theory, the universe was once in an extremely hot and dense state that expanded