## What would happen if the sun was bigger or smaller than it is now?

If for any reason the Sun shrank smaller than the Earth, this shrunken Sun wouldn’t have the mass to create fusion and would burn out completely. Our solar system would lose its only star. Earth’s mass would be at least 333,000 times bigger than it is now. Imagine the gravity that planet would have.

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## What would happen to the Earth if the sun got bigger?

If our world was as big as the Sun, then, like the water, our soil would have to be spread out to cover a much larger space. Less soil would mean less food, while the demand for food would stay the same.

What would happen to the Earth’s orbit if the sun were to double in size?

If the sun’s mass were to double without pushing or pulling on the Earth, then the Earth’s orbit will change to an ellipse which brings it out to our current radius but spends most of its time closer to the sun. The tides would probably get even stronger then, particularly when our orbit takes us closer to the sun.

### What would happen to the orbit of the Earth if the sun were suddenly replaced with a black hole the same mass?

If our Sun was suddenly replaced with a black hole of the same mass, Earth’s orbit around the Sun would be unchanged. Of course, Earth’s temperature would change, and there would be no solar wind or solar magnetic storms affecting us.

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### What would happen if the sun were heavier?

The sun’s mass determines how strong its gravity is. For example, if the sun were more massive with a stronger gravitational pull, and if Earth were at the same distance from the sun, our planet would have to orbit faster or it would fall into the sun.

What happens to the length of the Earth’s revolution around the sun when the sun is less massive?

If the sun were less massive with a weaker gravitational pull, Earth would have to orbit slower or it would be flung out of the solar system.

#### What would happen to Pluto’s orbit if the sun’s gravity decreased by half?

With only half the gravity, the sun would be like a much smaller star with only half its mass. Such a star would not be twice, but eight times dimmer. This would cool Earth to about -100℃.

#### What would happen to Earth’s orbit if the Sun became a black hole?

What would happen to Earth’s orbit if the Sun became a black hole? Nothing would happen to Earth’s orbit IF the Sun became black hole, Nothing would happen to the orbits of the other planets either or the orbits of the planets’ natural satellites, because mass of the Sun would not change.

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