The sun is considered one of the major sources of life on the planet. Without the sun we would neither have light nor warmth. There would be no concept of the planets. The list can go on. However, according to a recent study using the Kepler Space Telescope, one day sun will destroy the earth and all life forms on it. The bursts of high energy particles from the Sun will be a reason for this destruction. The phenomenon is called Superflare and is a common occurrence. According to the scientists’ former understanding, the stars grew out of such happenings after some time.
The recent study has refuted this finding. The superflares never go away entirely. Although these do not remain a powerful as the beginning, the superflares still have the power to cause major damage to the satellites and communication systems as well as damaging the outer layer of the atmosphere. One such incident also happened back in 1859 when superflare left with only 1% of its power crashed the global telegraph system. However, precautions can help to prevent such situations in the future. However, on a billion-year's timescale, even the precautions would not help.
According to scientists, the sun has been constantly converting hydrogen into helium producing light. However, one day the hydrogen would exhaust and the sun will suffer major changes thereby affecting the Earth as well.
The Earth is at a comfortable distance from the sun. Although the distance would remain unaltered, the Sun’s light and heat would change. As its hydrogen starts exhausting, the core will burn hotter and brighter resulting changes in the outer laters. This implies that the radiation reaching the earth would result in raising the heat levels here. The oceans will boil and no life form will be able to survive. This might mark the end of the world. However, a billion years are still far off.