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प्रश्न
Name the different types of stars.
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उत्तर
The different types of stars in the universe are stated below:
- Sun-like Stars: These are particularly similar to the Sun in size, but there is a lot of temperature variation. Examples are Alpha Centauri, Tau Ceti, etc.
- Red Giants: These stars do not have an outer layer as hot as the Sun, with temperatures ranging from 3000° C to 4000° C, but they have a very high luminance compared to the Sun. They are red, and their diameter is 10 to 100 times that of the Sun.
- Super Nova: They are more extensive and brighter than the red giant stars and the Sun. They are also considered the primary source of heavy elements in the universe.
- Binary or Twin Stars: A pair of two stars in which one revolves around the other or a common centre is known as a binary or twin star.
- Variable Stars: These stars have a variable shape and brightness, i.e., they keep changing whenever they expand or contract. Their brightness decreases when they expand and increases when they contract. An example is Pole Star.
संबंधित प्रश्न
Mark the following statement as true (T) or false (F).
Pole star is a member of the solar system. ( )
Why is the distance between stars expressed in light years? What do you understand by the statement that a star is eight light years away from the Earth?
There are about _________ stars in our galaxy.
A star rises at 8 pm tonight. At what time will it rise after a month? Why?
Suppose a new planet is discovered between Uranus and Neptune. Its time period would be
State whether the following statement is ‘True’ or ‘False’.
The planets keep changing their position with respect to stars.
Name the star that appears to be stationary in the night sky.
Write a note on the planet.
What is a star? What is its composition and how was it formed?
Stars are built by ____ gases.
