EMO-TONG
LIFE SUCKS LIFE SUCKS LIFE SUCKS.
LETS SLIT OUR WRISTS
LET'S CUT UP, CUT DOWN
CUT RIGHT, CUT LEFT
AND BLEED TOGETHER WITH EMO-TONG

EMO1 :D
EVE brother!
Agnes
Clayton
Junxiong
Salvana
Shekhuay
Siti
Weijun
Xueqi
Yangjun
Monica

Tuesday, January 16, 2007

The Sun's current age, determined using computer models of stellar evolution and nucleocosmochronology, is thought to be about 4.57 billion years. 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 4 million tonnes of matter are converted into energy within the Sun's core, producing neutrinos and solar radiation. 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 4-5 billion years, 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 MK, and will produce carbon and oxygen. While it is likely that the expansion of the outer layers of the Sun will reach the current position of Earth's orbit, recent research suggests that mass lost from the Sun earlier in its red giant phase will cause the Earth's orbit to move further out, preventing it from being engulfed. However, Earth's water will be boiled away and most of its atmosphere will escape into space.
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. The future of the planet is closely tied to that of the Sun. The luminosity of the Sun will continue to steadily increase, growing from the current luminosity by 10% in 1.1 billion years (1.1 Gyr) and up to 40% in 3.5 Gyr. Climate models indicate that the increase in radiation reaching the Earth is likely to have dire consequences, including possible loss of the oceans. The Sun, as part of its solar lifespan, will expand to a red giant in 5 Gyr. Models predict that the Sun will expand out to about 99% of the distance to the Earth's present orbit (1 astronomical unit, or AU). However, by that time, the orbit of the Earth may have expanded to about 1.7 AUs because of the diminished mass of the Sun. The planet might thus escape envelopment. The increased heat will accelerate the inorganic CO2 cycle, reducing its concentration to the lethal dose for plants (10 ppm for C4 photosynthesis) in 900 million years. But even if the Sun were eternal and stable, the continued internal cooling of the Earth would have resulted in a loss of much of its atmosphere and oceans (due to lower volcanism). More specifically, for Earth's oceans, the lower temperatures in the crust will permit their water to leak more deeply than today (at certain depth the water is evaporating) resulting in their total disappearance in 1 billion years.
However, it might be possible to move the Earth's orbit outwards, and thus it would not suffer a runaway greenhouse effect.
Okay so we all knw that this earth is goin to be gone 1 dae so y dun we screw it up even more? come on ppl burn more plastic, use more fuel, pollute the air, pollute the sea, use more cfc products and burn more forest =) emo01 had called me to tell the people i love that i love them in case the world ends tmr hahaha. okay so here i goes. I love alvin, daniel, felix, wensen, beam, desmond, christopher, yangjun, luther, ros and junxiong and of course lub ai qing dipx dips den dipper! sorri emo01 sadly to sae u're nt in my list.