Not all Planets are round. Some dwarf planets are not round
Round is a good shape. The force of gravity collapses matter into a spherical shape, once there is enough of it. Small bodies of normal solid matter less than a hundred miles across lack sufficient mass to pull them into a spherical shape.
NO, Planet Nominoe' 3442009 is a square planet with a tempruituer of -88,945oc
Planets are not round. They are spheres. They form this shape because the force of gravity works the same in all directions and it represents the lowest energy state of the body of matter. Although planets can be considered spheres they are not perfect, since they bulge at their equator due to centripetal force of rotation. They also may distort in shape due to other celestial bodies around them.
There are no planets orbiting the Earth because all eight of them orbit the Sun. But the Moon orbits the Earth, and all it does is go round and round in a rather complicated orbit which is disturbed by the Sun's gravity.
because of the gravity of the other planets around them
The circumference of a planet is the distance round their widest part. On earth, it is measured round the equator.
They are the four large moons, discovered by Galileo, that go round Jupiter.
Planets travel round the Sun, but all orbit in different speed and length.For example;Earth: Orbit round the Sun=364 1/4 daysNeptune: Orbit round the Sun= 164 years 288 daysSaturn: Orbit round the Sun= 29 years 167 days
They would be considered as 'spherical' celestial bodies. round
Our moon requires 27.3 days to orbit the earth. No other moon orbits our earth--they orbit other planets.
it doesn't - the earth and other planets go round the sun
the earth is not perfectly round, as with most other planets it is an oblate spheroid. Answer: The tilt refers to a tilt in the axis of rotation, compared to a line that is perpendicular to the Ecliptic (the plane of Earth's orbit around the Sun).
they're both round
There are no planets orbiting the Earth because all eight of them orbit the Sun. But the Moon orbits the Earth, and all it does is go round and round in a rather complicated orbit which is disturbed by the Sun's gravity.
because of the gravity of the other planets around them
Please kindly note planets revolve round the sun only.
Because SEASONS are caused by the tilt of a planet's axis of rotation (spin) as compared to the plane in which the planet orbits (goes round) the Sun. Earth has an axial tilt and so do MOST of the other planets. This means that these planets will also have seasons.
Astronomers do not create planets, they observe and study them. A "dwarf planet" is defined as large enough to be round, but too small to have cleared its orbit "neighbourhood" of other objects.
Copernicus
The circumference of a planet is the distance round their widest part. On earth, it is measured round the equator.