How is it possible to look back in time considereing the current technology available?
Whoever can solve is moderately intelligent.
2007-01-26 12:13:30 · 9 answers · asked by Please help!! 2 in Science & Mathematics ➔ Astronomy & Space
kinda by looking at stars
when you look at the suns light it is about 7 min old by the time it reaches earth so you are seeing light from about 7 min ago. it is the same when looking at stars. if you are looking at a star that is 5000 light years (the distance light travels in a year) away it is the light from 5000 years ago. so if that star blew up right now it would be 5000 years before we would see the explosion.
if the star was 10 billion light years away we could see what the beginning of the universe might have looked like.
2007-01-26 12:19:24 · answer #1 · answered by jake 5 · 2⤊ 0⤋
It's simple really. Light travels at a finite speed. The further away you look, the longer it took for the light to travel to your eyeballs. Look very far (like out into deep space) and you are seeing things that light took billions of years to get from there to here. Since you are looking at something as it was billions of years ago, you are looking back in time. The further away an object is in space, the further back in time we see it.
2007-01-26 14:06:23 · answer #2 · answered by Roman Soldier 5 · 0⤊ 0⤋
Probably not possible with todays technology. However, if you had a powerful telescope that could see the surface of distant planets, what you would see there is was happened in the past.
If one could travel faster than the speed of light, they would travel into the past. If you did this with the same telescope, and aimed it at earth, you'd then be able to see into the past. The bad part is, youd get no sound. Bummer.
2007-01-26 12:25:45 · answer #3 · answered by krodgibami 5 · 0⤊ 2⤋
When you watch any film you are looking back in time.
Also, somebody suggested a mirror somewhere far away in space reflecting images from the Earth.
Such images will be back in time for an Earth observer.
2007-01-26 12:46:45 · answer #4 · answered by PragmaticAlien 5 · 0⤊ 0⤋
Look up at the stars. No technology is required.
With the naked eye you can see stars dozens of light years away. The light you see left the star dozens of years ago. All we have of the stars is their old photographs.
2007-01-26 12:26:03 · answer #5 · answered by Anonymous · 1⤊ 0⤋
Human nature might make you prefer to look. Kinda like once you're using down the line and you notice a lifeless animal on the line, no depend how lots you tell your self "do no longer look" purely once you get upon it you look.
2016-11-01 09:23:17 · answer #6 · answered by Anonymous · 0⤊ 0⤋
To look back in time is to look within your own memories. If you wanted to go back into time you may want to travel to the stars.
2007-01-26 13:36:47 · answer #7 · answered by Anonymous · 0⤊ 0⤋
When you look at a person in the same room as you,you are seeing that person as they existed some time in the past.
As you look at things further and further away you are seeing that entity further and further in the past.
2007-01-27 00:15:38 · answer #8 · answered by Billy Butthead 7 · 0⤊ 0⤋
Are future is just are history repeating itself.
2007-01-30 00:17:27 · answer #9 · answered by pnn177 4 · 0⤊ 0⤋