What is period of rotation?
Besides revolving around the Sun, a planet also rotates on its own axis like a top . The time taken by a planet to complete one rotation is calledits period of rotation.
STARS AND THE SOLAR SYSTEM
What is the period of revolution ?
The time taken by a planet to complete one revolution is called its period of revolution. The period of revolution increases as the distanceof the planet increases from the sun.
What is an orbit ?
A planet has a definite path in which it revolves around the Sun. This path is called an orbit.
What is The Sun ?
The SunThe Sun is the nearest star from us. It is continuously emitting huge amounts of heat and light. The Sun is the source of almost all energy on the Earth. In fact, the Sun is the main source of heat and light for all the planets.
The Solar System
The Solar SystemThe Sun and the celestial bodies which revolve around it form the solar system. It consists of large number of bodies such as planets, comets, asteroids and meteors. The gravitational attraction between the Sun and these objects keeps them revolving around it.The Earth, as you know, also revolves around the Sun. It is …
Till 2006, how many planets in the solar system?
Till 2006 there were nine planets in the solar system. Pluto was the farthest planet from the Sun.In 2006, the International Astronomical Union (IAU) adopted a new definition of a planet. Pluto does not fit this definition. It is no longer a planet of the solar system.
What is Cassiopeia?
Cassiopeia is another prominent constellation in the northern sky. It is visible during winter in the early part of the night. It looks like a distortedletter W or M
What is an Orion ?
Orion is another well-known constellation that can be seen during winter in the late evenings. It is one of the most magnificent constellations inthe sky. It also has seven or eight bright stars Orion is also called the Hunter. The three middle stars represent the belt of the hunter. Thefour bright stars appear to be …
Ursa Major (Saptarshi)
Ursa Major (Saptarshi)Saptarshi has been associated with seven well known ancient Indian sages, or rishis, as shown in the figure below.According to ancient mythology, the seven sages who form the Saptarshi, preserve the eternal knowledge of Vedas and explain it to people in every new age.
What is constellation ?
The stars forming a group that has a recognisable shape is called a constellation.