Answer: Option [D]The correct answer is Constellation. Great bear is a constellation which is a group of some stars. A constellation is a group of stars that forms a pattern and has a name
Answer: Option [A]The correct answer is visible irregular dark patches on the photosphere of the sun resulting from a localised fall in the temperature to about 4000K. Sunspots are temporary phenomena on the suns photosphere that appear as spots darker than the surrounding areas.
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Answer: Option [C]The correct answer is Johannes Kepler. Johannes Kepler is best known for his three laws of planetary motion. These laws are: Planets move in orbits shaped like an ellipse.
Answer: Option [C]The correct answer is Black. The sky appears blue because the sunlight is scattered by the gas molecules in the atmosphere. In the absence of any atmosphere, there would be no scattering of sunlight and the sky would appear dark.
Answer: Option [D]The correct answer is a dying star. A supernova is a powerful and luminous explosion of a star. While most stars quietly fade away, the supergiants destroy themselves in a huge explosion, called a supernova.
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