Question

Чим відрізняється планета від зорі

Answer 1

Планета - это вращающийся астрономический объект, имеющий шароподобная форму, имеющий среднее по космическим меркам массой. Звезда является небесным телом, главным признаком которого является термоядерные химические реакции, которые происходят внутри него

Answer 2

Difference between a Planet and a Star

A planet and a star are two different celestial objects with distinct characteristics. Here are some key differences between planets and stars:

1. Formation: Planets are formed from the leftover material after the formation of a star. They are formed within a protoplanetary disk, which is a rotating disk of gas and dust surrounding a young star. Stars, on the other hand, are formed from the gravitational collapse of a cloud of gas and dust, known as a nebula.

2. Size and Mass: Stars are much larger and more massive than planets. Stars can range in size from small red dwarfs to massive supergiants, while planets are relatively smaller in comparison.

3. Energy Source: Stars generate energy through nuclear fusion in their cores. The fusion of hydrogen atoms into helium releases a tremendous amount of energy, which is what makes stars shine. Planets, on the other hand, do not generate their own energy and instead reflect the light they receive from their parent star.

4. Light Emission: Stars emit their own light and can be seen from great distances. They appear as points of light in the night sky. Planets, on the other hand, do not emit their own light but reflect the light of their parent star. This is why planets appear as bright objects in the sky, similar to stars, but they do not twinkle like stars do.

5. Composition: Stars are primarily composed of hydrogen and helium, with trace amounts of other elements. Planets, on the other hand, have a more diverse composition. They can be made up of rock, gas, or a combination of both. Some planets, like Earth, have a solid surface, while others, like Jupiter, are predominantly composed of gas.

6. Orbits: Planets orbit around stars in elliptical or nearly circular paths. These orbits are relatively stable and predictable. Stars, on the other hand, do not orbit other celestial objects. They remain fixed in their positions, except for their motion within a galaxy.

7. Number: There are a vast number of stars in the universe, estimated to be in the billions or even trillions. In contrast, the number of planets is also vast, but they are much more numerous than stars. The discovery of exoplanets in recent years has revealed that planets are common in our galaxy and likely throughout the universe.

These are some of the key differences between planets and stars. It's important to note that there is a wide variety of celestial objects in the universe, and each has its own unique characteristics and properties.