The only point in time that the sun will possibly scorch the earth is when it's near the end of its life cycle. During that time the sun will expand into a super giant star before it shrinks and turns into a black hole.
yes, the sun is fully affected by pollution on earth even though it is so far away that you will never reach it
Your basic instinct and insight are good; things that burn eventually run out of fuel. For this reason, the sun will in fact NOT burn forever. It will 'burn' for another 5 billion years or so. But the sun does not burn in the same way that wood burns in your fireplace. The sun produces its energy on the atomic level by way of the nuclear fusion of hydrogen into helium. See link for more.
We will be burn just like sun burn
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The sun does release a lot of heat and radiation, but it doesn't "burn" the Earth because the Earth's distance from the sun is within a habitable range that allows for the right conditions for life to exist. The Earth's atmosphere and magnetic field also help protect it from the sun's most harmful effects.
the earth would burn if the sun strike the earth
Ultimately (in about 6 billion years) the sun will burn out and just before it does it will expand enough to engulf and burn up earth.
The sun's gravity would pull the earth in to it and the earth would burn up
The sun will eventually go nova, before becoming a white dwarf. Everything around will be vaporized.
It wouldn't, because: If Earth was closer to the Sun, Earth would be so hot that even if you stay out in the Sun for a second, you may have a sun-burn!
The distance from the sun that is safe for humans is about 93 million miles, which is the average distance between Earth and the sun. As you get closer to the sun, the intensity of its radiation increases, resulting in sunburns and potential damage to the skin. If someone were to get within a few million miles of the sun, the heat and radiation would be intense enough to cause severe burns and pose a serious threat to their health.
No, the Earth will never get any closer to the Sun. However, in about 5 billion years, the Sun is going to expand enormously and will probably swallow up Mercury and Venus, and possibly the Earth as well. Of course, in the next 6 billion years, we expect to be able to move the planet outward, possibly to a younger star.