Question

say this answer

1.It takes the sun 225-250 million years to do a single revolution of the milky way galaxy. How fast does the sun travel?

A. 220km in a second
B. 220 km in a min
C.220km in a hour
D.220km in a year

2.Which is the name of a radio source that is very far from Earth?

A. Tracer
B.phaser
C.laser
D.Quaser​

Answer 1

Answer: A 220km in a second

B laser

Answer 2

Answer:

The correct answer is 1) (A) 220 km in a second and 2) (D) Quaser.

Explanation:

Given that:

1.It takes the sun 225-250 million years to do a single revolution of the milky way galaxy. How fast does the sun travel?

A. 220km in a second

B. 220 km in a min

C.220km in a hour

D.220km in a year

Answer:

• The milky way is the galaxy which is included in the solar system.
• The radius is approximately for about 52,850 light years and the number of stars that is present is 100-400 billion in numbers.
• The speed of the milky way is when the sun moves around is 483,000 miles per hour.

Therefore, the speed of the sun is 220 km/s.

2.Which is the name of a radio source that is very far from Earth?

A. Tracer

B.phaser

C.laser

D.Quaser

Answer:

• A Quasar is defined as a massive and remote object which is celestial, it emits an large amount of energy and it can be seen like a star through a telescope.
• The Quasar contains black holes which are massive and they represent the galaxies that are evolved.
• They are the group of a distant object that is surrounded by black holes which will be million times as that of the sun.

Therefore, the radio source which is far away from the earth is Quasar.

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