Question

In what sense are telescopes like time machines?

A. They allow us to see distant objects as they were long in the past.
B. They allow us to see what Earth looked like long ago.
C. They allow us to see distant objects as they will be in the future.
D. They allow us to look at a galaxy and see it as it was at many different times in the past.

Answer 1

The correct answer is A - They allow us to see distant objects as they were long in the past.

Step-by-step explanation:

A telescope is an optical instrument. It helps in magnifying distant objects usually stars and planetary bodies through the use of various lenses and mirrors. A time machine is a hypothetical device that transports an object/matter between different time frames.

When we view objects with a telescope, what we are seeing through the lenses have already occurred, especially when viewing distant objects. This is because of light. Light travels.

For example, if you are looking at the sun directly, you are seeing the sun as it was about 8mins 20secs ago. Now imagine viewing distant objects, you are actually looking at the past.