8th Science Refresher course Topic 2 - Answer key

EVALUATION 

1. Telescope was invented by__________. 

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2. The galaxy containing young and hot stars is___________ 

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3. _______ is a large constellation which covers a large part of the sky. 

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4. ________ is the first satellite launched by India.

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5. Older stars:  elliptical galaxies:     Younger stars: ______________ 

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6. The galaxy which contains abundant amount of gas and dust is ____ 

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7. An object that revolves around a planet in a stable and consistent orbit is called a _______. 

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8.    _______ is the space agency of the Government of India headquartered in the city of Bangaluru. 

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9. GSLV for placing satellite into _________ orbit

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