விண்மீன் (Tamil Wikipedia)

Analysis of information sources in references of the Wikipedia article "விண்மீன்" in Tamil language version.

refsWebsite

Global rank Tamil rank

7nationalgeographic.com

344^th place

141^st place

nationalgeographic.com

science.nationalgeographic.com

"They are composed largely of gas and plasma, a superheated state of matter composed of subatomic particles.". தேசிய புவியியல் கழகம். http://science.nationalgeographic.com/science/space/universe/stars-article/. பார்த்த நாள்: 16 May 2014.
"Stars are cosmic energy engines that produce heat, light, ultraviolet rays, x-rays, and other forms of radiation.". தேசிய புவியியல் கழகம். http://science.nationalgeographic.com/science/space/universe/stars-article/. பார்த்த நாள்: 16 May 2014.
"No one knows how many stars exist, but the number would be staggering. Our universe likely contains more than 100 billion galaxies, and each of those galaxies may have more than 100 billion stars.". தேசிய புவியியல் கழகம். http://science.nationalgeographic.com/science/space/universe/stars-article/. பார்த்த நாள்: 16 May 2014.
"Yet on a clear, dark night Earth's sky reveals only about 3,000 stars to the naked eye.". தேசிய புவியியல் கழகம். http://science.nationalgeographic.com/science/space/universe/stars-article/. பார்த்த நாள்: 16 May 2014.
"In time, gravity causes these clouds to condense and collapse in on themselves. As they get smaller, the clouds spin faster because of the conservation of angular momentum—the same principle that causes a spinning skater to speed up when she pulls in her arms.Building pressures cause rising temperatures inside such a nascent star, and nuclear fusion begins when a developing young star's core temperature climbs to about 27 million degrees Fahrenheit (15 million degrees Celsius).Young stars at this stage are called protostars.". தேசிய புவியியல் கழகம். http://science.nationalgeographic.com/science/space/universe/stars-article/. பார்த்த நாள்: 16 May 2014.
"As they develop they accumulate mass from the clouds around them and grow into what are known as main sequence stars. Main sequence stars like our own sun exist in a state of nuclear fusion during which they will emit energy for billions of years by converting hydrogen to helium.". தேசிய புவியியல் கழகம். http://science.nationalgeographic.com/science/space/universe/stars-article/. பார்த்த நாள்: 16 May 2014.
"As stars move toward the end of their lives much of their hydrogen has been converted to helium. Helium sinks to the star's core and raises the star's temperature—causing its outer shell to expand. These large, swelling stars are known as red giants. The red giant phase is actually a prelude to a star shedding its outer layers and becoming a small, dense body called a white dwarf. White dwarfs cool for billions of years, until they eventually go dark and produce no energy. At this point, which scientists have yet to observe, such stars become known as black dwarfs. A few stars eschew this evolutionary path and instead go out with a bang—detonating as supernovae. These violent explosions leave behind a small core that may become a neutron star or even, if the remnant is large enough, a black hole.". தேசிய புவியியல் கழகம். http://science.nationalgeographic.com/science/space/universe/stars-article/. பார்த்த நாள்: 16 May 2014.