About 5 billion years
it has been berning since the beginning of time
About 5 billion
About 5 billion.
5 billion years
About 5 billion years
The sun is not actually burning as in a fire on earth, Burning is a chemical reaction that releases heat. The sun is a nuclear reaction. However most scientists estimate that the sun will continue to react brightly for another five billion years or so.
The sun is our local star. It is a giant fusion engine, and it is "burning" hydrogen and fusing it into helium at an enormous rate. But as long as it has fuel to drive the fusion process that is the sun's life, it will burn fuel continuously. It has been burning for about 4.5 billion years, and it has about that much more time left.
The Sun Is Burning was created in 1964.
The mine fire in Centralia has been burning since 1962.
The Sun is estimated, based on its size and energy production, to be about 5 billion years old."The Solar System", Roman Smoluchowski, Scientific American Library, 1983, page 6
Lovermore's Centennial Light is the longest burning light, 108 years in.
Well, yes, as long as you understand that "burning" doesn't mean combustion, but nuclear fusion. Actually only the core of the Sun is "burning"; all the rest of it is insulating us from its terrible heat, and doing a pretty good job of it, too.