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19.11.2019 •
Social Studies
Match each galaxy to its description.
a. the milky way
b. elliptical galaxy
c. irregular galaxy
1. contains dust, gas and young stars
2. contains mostly older stars with a red color
3.arms extend from a core full of black holes
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Ответ:
(1) Answer is C – Irregular galaxy
This type of galaxy does not have a clear shape. It contains high amount of young stars, gas and dust. Among the gases, hydrogen is the most abundant gas. It causes to form new stars.
(2) Answer is A – Milky way
Milky Way is the galaxy where our Earth is located. It is one of large spiral shape galaxies of the universe. IT contains mostly older stars with a red color. It is said that Milky Way has around 200 billion of stars.(3) Answer is B – Elliptical galaxy
These types of galaxies have a clear shape as ellipsoidal shape. Elliptical galaxies have less number of stars and dust. The formation of new stars is low. Hence, the brightness is low. According to Edwin Hubble, elliptical galaxy is one of three classes of galaxies.
Ответ:
1cm/year
Step-by-step explanation: