Q-1) what are constellations?
Q-2) How constellations are formed?
Q-3) what is a nebula?
Q-4) why the universe is dark?
Answers
Answer:
Ans 1 - A constellation is a group of stars that make an imaginary shape in the night sky. They are usually named after mythological characters, people, animals and objects. In different parts of the world, people have made up different shapes out of the same groups of bright stars.
Ans 2 - Constellations are formed of bright stars which appear close to each other on the sky, but are really far apart in space. ... Because of the rotation of the Earth and its orbit around the Sun, we divide the constellations into two groups. Some constellations never rise nor set, and they are called circumpolar.
Ans 3 - A nebula is a formation in space which is constituted mostly of helium, dust, and other gases in various concentrations.
Ans 4 - As such, stars haven't existed long enough to fill the Universe with their light, which is also stretched and weakened by the cosmic expansion. The result is a Universe as black as pitch.
Explanation:
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Answer:
Ans 1- A constellation is a group of stars that make an imaginary shape in the night sky. They are usually named after mythological characters, people, animals and objects. In different parts of the world, people have made up different shapes out of the same groups of bright stars.
Ans 2 - Constellations are formed of bright stars which appear close to each other on the sky, but are really far apart in space.... Because of the rotation of the Earth and its orbit around the Sun, we divide the constellations into two groups. Some constellations never rise nor set, and they are called circumpolar.
Ans 3- A nebula is a formation in space which is constituted mostly of helium, dust, and other gases in various concentrations.
Ans 4 - As such, stars haven't existed long enough to fill the Universe with their light, which is also stretched and weakened by the cosmic expansion. The result is a Universe as black as pitch.