The period of revolution of a typical comet is very long compared to that of planets. Comets are members of our solar system that revolve around the sun in highly elliptical orbits. The large gap between the orbits of Mars and Jupiter is occupied by numerous small objects called Asteroids. Unlike stars, planets do not have their light they reflect the rays of light falling on them from the nearby star. These planets resemble stars in their structure but differ in composition. Planets are the heavenly bodies that move around a star in a certain elliptical orbit. The gravitation force of attraction between the sun and the other bodies around it holds our solar system in its place. It is composed of a large number of heavenly bodies like comets, asteroids, meteors, and planets. Our solar system consists of the sun and the celestial bodies revolving in it. Some of the famous constellations are Ursa Major, Cassiopeia, Orion, Canis Major, Centaurus.
There are currently 88 officially recognised constellations. Throughout history, different cultures have given different names and numbers to constellations based on what they thought they saw. However, if you draw lines in the sky between the stars like a dot-to-dot puzzle and use your imagination, the picture will resemble an object, animal, or person. Some stars in a constellation may be very close to one another, while others may be very far away. They have nothing to do with one another. These stars are a long way away from Earth. ConstellationsĪ constellation is a group of stars that has been named and resembles a specific shape in the sky. Many other stars can be seen with the naked eye at night, but their enormous distances from Earth cause them to appear as fixed points of light. StarsĪ star is a type of astronomical body that consists of a luminous spheroid of plasma held together by gravity. These meteorites help scientists study the nature of the material that led to the solar system’s formation. These large meteors that reach the surface of Earth are called a meteorite. However, large meteors can reach the Earth before they can evaporate completely. This bright streak only lasts for a short duration of time because the tiny meteors evaporate due to the excessive heat. We call them shooting stars, but in fact, these are the meteors. Due to this heat, they begin to glow and evaporate quickly that is why sometimes, on a night, we see bright streaks of light passing through the night sky. They suffer large frictional force due to their motion through the atmosphere, which causes them to heat up. MercuryĪ meteor is a small object that occasionally enters the atmosphere of the Earth at really high speeds. Planets are continuously moving, and their position to the stars keeps changing. Stars twinkle, but the planets do not, and this helps us differentiate between a star and a planet in the night sky. However, various man-made space probes have also been sent around the moon and mars to study their structure. Some planets have small celestial bodies revolving around them, and these are known as their natural satellites.įor example, the moon is the natural satellite of the Earth. A planet also rotates about its axis, and the time taken to complete one rotation around its axis is known as the rotation period. The period of revolution of a planet increases with its distance from the sun. The time taken by a planet to complete one revolution around the sun is known as its period of revolution. These planets move around the sun in a definite path called an orbit. The eight planets in the increasing order of distance from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
Like all other planets in the solar system, Earth revolves around the sun. The sun lies at the approximate centre of the solar system. It is composed of many heavenly bodies like comets, asteroids, meteors, and planets. Learn about Satellite here What is a Solar System? Let us learn more about Solar System the planets with a diagram. Over the years, there have been new studies on the solar system. The solar system as we know it is almost (4.6) billion years old. Comets and other ice things formed of incredibly tenuous gases and dust particles are found in the solar system. The solar system comprises the Sun, eight planets, stars from the Milky Way galaxy orbiting the Sun, 210 planetary satellites, and countless asteroids.
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