Consider the following pairs : Objects in space Description 1. Cepheids Giant clouds of dust and gas in space 2. Nebulae Stars which brighten and dim periodically 3. Pulsars Neutron stars that are formed when massive stars run out of fuel and collapse How many of the above pairs are correctly matched?

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UPSC Question: Consider the following pairs :...

Consider the following pairs : Objects in space Description

Cepheids Giant clouds of dust and gas in space 2. Nebulae Stars which brighten and dim periodically 3. Pulsars Neutron stars that are formed when massive stars run out of fuel and collapse How many of the above pairs are correctly matched?