Recent content by terencesiu

:confused: I think I have more and more questions. How does the people can observe the planet? Do they get the picture of the planet instantly, or just get the picture after the device have been set up for a long period? If they can get the message instantly, does it means that we can see the...

I can mostly understand, does it means that we can see the past of planets is because the medium "space" is already exists? but, really thank you!:smile:

then, how about decrease the speed of sound, by making the medium tends to be vacuum? Can we hear the voice from the past?

I am watching a movie about a person who can see the future. I have thought a lot of time and I think it is impossible, but how if we see the past? In fact, we can see the relative past of a planet which is far far away, since time is needed for light to pass to our eyes. But can we do that on a...