Question

What are the two possible explanations for not seeing something glowing brightly along every line-of-sight in the sky?

I. The universe is infinite in size and infinitely old, but dust absorbs starlight from far away stars.

II. The universe has a finite number of stars.

III. The universe is changing in some way as to prevent us from seeing an infinite number of stars.

	I and II
	I and III
	II and III
	I, II and III

Answer 1

possible explanation for not seeing something glowing brightly along every line of sight in the sky is that

universe  is infinite in size and infinitely old, but dust absorbs starlight from far away stars.

and  The universe is changing in some way as to prevent us from seeing an infinite number of stars.

so 1 and 3

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