"When we look at stars we apparently are peeping into the past." Why it is said so? Because:

Options

A. Stars are very large in size
B. Stars are very small in size
C. Light coming from a star takes a long time to reach our eyes
D. There is no life on stars just as in past of earth

Answer

To understand why we say "when we look at stars we apparently are peeping into the past," we can break down the explanation into the following steps:

### Step-by-Step Solution:

1. **Distance of Stars**: Stars are located at vast distances from Earth, often measured in light-years. A light-year is the distance that light travels in one year.

2. **Speed of Light**: Light travels at a speed of approximately 299,792 kilometers per second (or about 186,282 miles per second). Despite this incredible speed, the distances to stars are so immense that it takes a significant amount of time for their light to reach us.

3. **Time Delay**: When we observe a star, we are not seeing it as it is at this very moment. Instead, we are seeing the light that left the star many years ago. For example, if a star is 10 light-years away, the light we see today actually left that star 10 years ago.

4. **Peeping into the Past**: Therefore, when we look at stars, we are effectively looking back in time. The farther away a star is, the older the light we are seeing. This phenomenon is why we say we are "peeping into the past."

5. **Conclusion**: The correct explanation for the statement is that "light coming from a star takes a long time to reach our eyes." This is the reason we perceive the light from stars as a glimpse into the past.

### Final Answer:
The correct option is: **Light coming from a star takes a long time to reach our eyes.**

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