Using a light year as a distance measurement has another advantage — it helps you determine age. Let's say that a star is 1 million light years away. The light from that star has traveled at the speed of light to reach us. Therefore, it has taken the star's light 1 million years to get here, and the light we are seeing was created 1 million years ago. So the star we are seeing is really how the star looked a million years ago, not how it looks today. In the same way, our sun is 8 or so light minutes away. If the sun were to suddenly explode right now, we wouldn't know about it for eight minutes because that is how long it would take for the light of the explosion to get here.
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Sunday, January 4th, 2009 at 7:59 am
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January 4th, 2009 at 7:59 am
Time is the wristwatch on God's hands, not ours. We have the freedom of choice which determines how the time we are given is spent. The only thing we can do is learn from the past, live life to the fullest in the pressent unconditionally, and works towards a better tommorow. The future is a gift we may or may not experience the first time it comes around.
January 4th, 2009 at 7:59 am
I think that any technical/mathematical evaluation of time travel will need to wait until we have a much better definition of what we mean by time and also what exactly we mean by "time travel."
From one perspective, you have to be able to perhaps visualize an answer to something before you can start to look for the answer. Look at simple concepts that we take for granted today, ideas like a round (not flat) Earth, a (possibly) infinte universe, light having a speed, planets going around the Sun in ellipses. All of these things we take for granted an understand, yet the weren't common knowledge even 200 yrs ago.
Maybe once we have a better idea dof what time is, we'll be able to think about traveling in time.
As you allude to in your question, one view of time travel is the ability to get out "in front" of a light ray from a star, and see that star like is was years before. You could ideally travel to a point in space that the light from the star hadn't reached yet, and actually watch the star being born.
January 4th, 2009 at 7:59 am
i do believe so…
more likely traveling into the past makes more scientific sense than into the future…
well, u enver know wut we gon discover in the nex years… u never know…
jus like thing used to be myth in the past, now, its jus a piece of common sense
January 4th, 2009 at 7:59 am
Theoreticly… yes. But obviously no because we have not been visited by people of the future… unless those are the aliens….
January 4th, 2009 at 7:59 am
It would be impossible to pass through the forces that are necessary to operate which opens the passage of time to different times away from the present. All matter would be ripped apart down to it's subatomic core and then just fade away back into other matter