Worth 100 points!
Astronomers want to study a star in the Andromeda galaxy, the closest galaxy to our own. Which instrument has the advanced technology needed to study such a far-off object? Select three options:
-Rover
-Probe
-Satellite
-Space station
-Space observatory

-Space observatory

Explanation:

Space observatory has allowed exploration beyond our solar system. It has telescopes which collect light and data from objects in space. The light can be collected above atmosphere and is not distorted. There is no light pollution, no twinkling and no attenuation. Also, some of the electromagnetic rays do not pass through the atmosphere. Observation of such radiation is helpful with space observatories.

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the answer is

a) revise existing treaties

b) do away with political alliances

c) prevent the spread of communism

d) bring an end to european colonization

the main goal of the southeast asia treaty organization was to prevent the spread of communism in southeast asia.

the answer is a. monarch