UNIVERSE
PLANETARY INTERIORS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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6 billion years; 12 billion years
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6 million years; 12 million years
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13 billion years; 26 billion years
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4.5 million years; 10 million years
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Detailed explanation-1: -Stars like our Sun burn for about nine or 10 billion years. So our Sun is about halfway through its life. But don’t worry. It still has about 5, 000, 000, 000-five billion-years to go.
Detailed explanation-2: -In about 5 billion years, the Sun is due to turn into a red giant. The core of the star will shrink, but its outer layers will expand out to the orbit of Mars, engulfing our planet in the process. If it’s even still there. One thing is certain: By that time, we won’t be around.
Detailed explanation-3: -A: Roughly 5 billion years from now, the Sun will exhaust the hydrogen fuel in its core and start burning helium, forcing its transition into a red giant star.
Detailed explanation-4: -Scientists predict the Sun is a little less than halfway through its lifetime and will last another 5 billion years or so before it becomes a white dwarf.