Our galaxy consists of a large, nearly flat with a central , all surrounded by a vast . The disk of the milky way is about in diameter and thick. We refer to the gas and dust that resides in our galaxy as . From our location, we cannot see far into the disk with because our view is blocked by .

Our galaxy consist of a large, nearly flat external star system with a central sun, all surrounded by a vast halo of hot gases. the disk of the milky way is about 100,000 light years in the diameter and very thick. We refer to the dust and gas that resides in our galaxy as nebula. From our location, we cannot see far into the disk with human eyes because our view is blocked by longer distance of the speed of light.

Explanation:

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.