While some stars (like the Sun) are very nearly spherical, others are not. The star Altair in the constellation Aquila rotates very rapidly, causing its equator to bulge outward significantly. Altair looks a bit like a beach ball being sat upon. The reason the Sun and other slowly rotating stars are spherical is gravity pulling inward, and the fact that they are made of gas, not solid material. Any gas in the Sun that was further from the center than gas around it would be pulled back down--there's nothing solid beneath it to support it against gravity's downward pull.
No, the Sun and Earth are not roughly the same shape. The Sun is a roughly spherical star, while the Earth is an oblate spheroid, meaning it is mostly spherical but slightly flattened at the poles and bulging at the equator.
PLANET
A small spherical object orbiting the sun would be called a planet, asteroid, or comet, depending on its characteristics and orbit.
The unlabeled spherical object between the sun and earth is the moon. It orbits around Earth and reflects sunlight, making it visible from our perspective on Earth.
A dwarf planet is spherical in shape and orbits the sun without clearing its orbit of smaller debris. Examples of dwarf planets are Pluto and Eris.
Spherical
The Sun's core is mostly spherical in shape. It is where nuclear fusion occurs, producing energy in the form of light and heat.
The sun is a sphere and the moon is a sphere.
No. The sun is a circle not square. It is round, what you can call spherical.
The spherical ball rolled down the hill into the street.
No, the Sun and Earth are not roughly the same shape. The Sun is a roughly spherical star, while the Earth is an oblate spheroid, meaning it is mostly spherical but slightly flattened at the poles and bulging at the equator.
PLANET
The Sun is spherical (round), with a diameter of about 1.4 million km.
No but they are of a spherical shape
A small spherical object orbiting the sun would be called a planet, asteroid, or comet, depending on its characteristics and orbit.
It is an adjective, so you could say: "The Sun is a bright spherical object in the sky during the day".
The Moon of the Earth has a spherical shape regardless to its position compared to the Sun.