When will the sun disappear?

Answer 1

Scientists expect the Sun to last for another 12 billion years, although it will go through several stages of size and heat during that period. It is expected that within one billion years the Sun will heat the Earth's surface to such a degree that oceans will vaporize and life will have become impossible on our planet.

Answer 2

Yes. I've seen this phenomenon personally while visiting my parents at their beach-house, which faces the western ocean. The sun seems to disappear before it reaches the horizon. At about 6:15pm the sun just disappeared below a horizontal, imaginary line just above the actual horizon.

My theory is that the sun has already set below the actual horizon that we see. It is the light from the sun that we see. This light is bent through the atmosphere in such a way that we perceive that the sun is still in the sky. [Another theory is that the Earth's gravity bends the light. Maybe it is both the atmosphere and gravity.] Either way, the sun's light is bent, thus making it appear to still be setting.

The bending of light through the atmosphere may also explain why the sun's light seems to be a different color. However, I am not sure about this. Just a thought.

Answer 3

not "sun can disappear" but it shall disappear. it is the fate of every star that it has to eventually collapse on and itself and then reduce to a micro scopic point. Sun is likely to run out of its energy after 5 billion years. if there is no sun, there's no planet or life on them. sun is the biggest source of light. its gavitational pull is so strong that it keeps all planets in orbit and moving around it. its megnatic field is so strong that it streches even beyond Pluto. sun contains 99.8% of the toal mass of solar system.

Answer 4

Yes, it does. I presume you are talking about variation in height at noon from day to day. This varies with the seasons because of the tilt of the Earth's axis. In the northern hemisphere the Sun is highest above the horizon in June, at the summer solstice, and lowest in December, at the winter solstice.

Answer 5

The sun is expected to run out of fuel in about 5 billion years, at which point it will expand into a red giant, engulfing the inner planets like Mercury and Venus. However, it will take a few more billion years for the sun to completely cool down and fade away, leaving behind a white dwarf.