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Planets and stars have gravity.
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∙ 15y ago
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Why are strong astronomical bodies such as planets and stars round?
A combination of gravity (pulling inward in all directions) and centrifugal force from rotation (pulling outward at the equator) produces a spheroidal shape.
What attractive force keeps planets in orbit around stars?
Gravity.
What is gravityy?
Gravity is a force pulling together all matter (which is anything you can physically touch). The more matter, the more gravity, so things that have a lot of matter such as planets and moons and stars pull more strongly.
What force gives planets stars solar system their shape?
gravity of course
What keeps the planets in the Sun's orbit?
Gravitational force, combined with the velocities of the planets. The force from the Sun is pulling the planets toward it, but the velocity of each planet is acting against this. The result is that the planets orbit the Sun. (The question is a bit mixed up, but it seems obvious what it's about.)
Why are stars different from planets?
Planets and StarsPlanets are comparatively smaller than stars and they don't have their own light, their mass is much lesser, their gravitational force is comparatively weak, etc.
Do stars orbit planets or planets orbit stars?
Planets orbit stars.
What is hotter planets or stars?
stars, the planets have to get heat from stars
Is only earth only object that exerts force of gravity?
No, all objects in the Universe generate a pulling force on all other objects. The Moon, Sun, planets, asteroids, meteors and stars all have a gravitational field. All humans, animals, trees, planes and buildings possess a gravitaional force, relative in size to its mass.
Why do planets need their stars?
Planets do not technically need their respective stars, but stars keep planets in orbit and provide heat and light to the planets.
Do planets and moons have stars?
On the contrary! A star has planets, which circulate it. And planets have moons. Stars do not circle planets.
How do you know of black holes?
No one has ever seen a black hole; so how do we know of them? Well, scientist's measured to movements of planets and saw them all moving toward a force. Now, we believe that there is something in the center of the galaxy that is pulling planets and stars towards it. Scientist's measured that this force is strong enough to decease anything that comes in contact with it. We call this force a "Black Hole". Why is it called a BLACK hole? Well, it is so strong that not even light can escape it.
