Question

How can the Hubble SpaceTelescope take pictures of the past?

Answer 1

as light have a definite speed we see all ,objects far away in past only.

Explanation:

Light travels 300,000 KM/sec.So we the Sun a s it was 8.2 minutes back.
When Hubble take a picture of Andromeda, it is the Andromeda 25 million years back..Hubble can not see Andromeda as it is now. Because light takes time to travel.
Andromeda galaxy is 2.5 million light years away.