our commandoes must be very watchful of SOLAR ERUPTIONS. our rocket scientists must keep a lookout for such eruptions, to make sure nothing like that is entering delhi.
and our billion indians could pray that nothing like that happens to madame and her son.
How can you imagine size of this universe, a new theory says there could be a parallel universe behind every black hole and there are billions of black holes. Phew who the hell created all this madness.
Re: Huge...
by john rambo on Feb 09, 2011 06:53 PM
the invisible creates all unimaginable....u wanna create something unimaginable my friend? Then take the help if the invisible..
Re: ISRO scam
by Vicks Sanw on Feb 08, 2011 11:30 AM
useless slave wake up from scam tere are lot to do in life, politician are there to fight for you dont worry...
Re: Re: ISRO scam
by bipin kanagotagi on Feb 09, 2011 12:02 PM
politicians to fight for us??? they are not even able to save their own skin!! ha ha, fight for us!! ;)
The Sun is the star at the center of the Solar System. It has a diameter of about 1,392,000 km, about 109 times that of Earth, and its mass (about 2×1030 kilograms, 330,000 times that of Earth) accounts for about 99.86% of the total mass of the Solar System. About three quarters of the Sun's mass consists of hydrogen, while the rest is mostly helium. Less than 2% consists of heavier elements, including oxygen, carbon, neon, iron, and others.......
The Sun was formed about 4.57 billion years ago when a hydrogen molecular cloud collapsed Solar formation is dated in two ways: the Sun's current main sequence age, determined using computer models of stellar evolution and nucleocosmochronology, is thought to be about 4.57 billion years. This is in close accord with the radiometric date of the oldest Solar System material, at 4.567 billion years ago...
The Sun is about halfway through its main-sequence evolution, during which nuclear fusion reactions in its core fuse hydrogen into helium. Each second, more than four million metric tons of matter are converted into energy within the Sun's core, producing neutrinos and solar radiation. At this rate, the Sun has so far converted around 100 Earth-masses of matter into energy. The Sun will spend a total of approximately 10 billion years as a main sequence star.
The Sun does not have enough mass to explode as a supernova. Instead, in about 5 billion years, it will enter a red giant phase, its outer layers expandi
Re: Sun
by om shanti on Feb 07, 2011 11:00 PM
it will enter a red giant phase, its outer layers expanding as the hydrogen fuel in the core is consumed and the core contracts and heats up. Helium fusion will begin when the core temperature reaches around 100 million K and will produce carbon, entering the asymptotic giant branch phase.
Earth's fate is precarious. As a red giant, the Sun will have a maximum radius beyond the Earth's current orbit, 1 AU (1.5�011 m), 250 times the present radius of the Sun. However, by the time it is an asymptotic giant branch star, the Sun will have lost roughly 30% of its present mass due to a stellar wind, so the orbits of the planets will move outward. If it were only for this, Earth would probably be spared, but new research suggests that Earth will be swallowed by the Sun owing to tidal interactions. Even if Earth would escape incineration in the Sun, still all its water will be boiled away and most of its atmosphere would escape into space. Even during its current life in the main sequence, the Sun is gradually becoming more luminous (about 10% every 1 billion years), and its surface temperature is slowly rising. The Sun used to be fainter in the past, which is possibly the reason life on Earth has only existed for about 1 billion years on land. The increase in solar temperatures is such that in about another billion years the surface of the Earth will likely become too hot for liquid water to exist, ending all terrestrial life.
Re: Re: Sun
by om shanti on Feb 07, 2011 11:02 PM
Following the red giant phase, intense thermal pulsations will cause the Sun to throw off its outer layers, forming a planetary nebula. The only object that will remain after the outer layers are ejected is the extremely hot stellar core, which will slowly cool and fade as a white dwarf over many billions of years. This stellar evolution scenario is typical of low- to medium-mass stars...
Re: Re: Re: Re: Re: Sun
by mahammad naragund on Feb 08, 2011 08:53 AM | Hide message
the sun describes in QURAN 1400 YEARS AGO its shape and rotation etc .
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Re: Re: Re: Sun
by ravi kumar on Feb 08, 2011 06:54 PM
thanks for enlightening :) looking at next 30 years it seems things wont change much though.
Re: Re: Re: Sun
by iype george on Mar 08, 2012 04:55 PM
Dont worrry we wil generate electricity free of cost and keep the planet cool and condense all the water putting up condensors. Human beings know how to survive.
