2007-02-17 11:45:39 · 6 answers · asked by goring 6 in Science & Mathematics ➔ Astronomy & Space
A star's light can take 100's or even 1000's of years to reach the the earth. For example our sun's light takes about 8 Min's to get from the sun to the earth . Meaning if something happend to the sun like if it suddenly stopped shining, we would not know for 8 Min's (That would only be true if we did not have satellites observing the sun 24/7) . If you look at a star that is 100 light years away you will be looking at light the way it looked 100 years ago. So if that star say turned a different a color we would not know until the new light reached us 100 years later . So if you look at a star that is 1000 light years away as far as we know the star is still there . But because it takes light 1000 years to get to us we wont know for a thousand years .
2007-02-17 14:53:25 · answer #1 · answered by Thechosen1 2 · 0⤊ 0⤋
Hi. They are real, just as a NASCAR is real even though you hear (and see) it after it has moved a bit. Light travels about a foot per billionth of a second. If the car is 1000 feet away the light is 1/1,000,000 of a second old when you see it. The stars are many times farther away but the principle applies.
2007-02-17 19:50:03 · answer #2 · answered by Cirric 7 · 0⤊ 0⤋
They were real entities,you are seeing them as they were in the past.
Space may be expanding as a two dimensional sphere with a holographic overlay to allow what we see and experience.
You are isolated in time from anyone you know but the holographic overlay allows you to inter act without seeing any difference.
2007-02-17 21:06:05 · answer #3 · answered by Billy Butthead 7 · 0⤊ 0⤋
Their is a chance that some of the bodies that we have observed don't exist anymore has what we observe is the light that comes from them. So is something is 10 light years away, we are observing what it was ten years ago. So yes, some things could be out of existence when we see them.
2007-02-17 22:06:40 · answer #4 · answered by Anonymous · 0⤊ 1⤋
Yes, they are. Both. When you look outwards, you see the Universe as it 'used to be' due to the length of time it takes light to arrive here. And the further the distance that you look, the further back in time see.
Doug
2007-02-17 19:49:30 · answer #5 · answered by doug_donaghue 7 · 0⤊ 0⤋
both, we are seeing them at the moment in the past
2007-02-17 21:08:38 · answer #6 · answered by blinkky winkky 5 · 0⤊ 0⤋