NewScientist The Last Word - Tag 'Space' details

Tag 'Space' details

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Where did the material for the big bang come from? If the big bang was not an explosion, but an expansion, and nothing existed before it. What caused it, and where did the material that is currently expanding come from?
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Asked by bigpmc
on 2010-07-03 19:08:08

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Categories: Our universe.

Tags: Space, Universe, bigbang.

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If you had a very powerful telescope would you be able to see the earth in a time passed? If you had a telescope of such power that you were able to see across and beyond the edge of the universe and back through it. what would you see if you looked at the earth? would the image you see be of the past?
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Asked by masta6000
on 2010-06-29 13:07:07

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Categories: Our universe.

Tags: Space, light, time.

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If you're erased from time and space could you enter the 'afterlife'?

Hypotheticaly, If time travel existed and we could go forwards and backwards in time; and you created a paradox in which your existence never was (the grandfather/mad scientist theory) and there WAS an afterlife how humans percieve it currently; (soul leaving the body and entering a spirit world/universe) could the soul enter or would the soul seise to exist too? For instance, the spirit world would have to have no concept of time and space as A) everyone would age and B) it would run out of space eventually as noone would be leaving it. Technically you and your soul would of existed once, and as the soul can survive without your physical presence, couldn't it survive without a physical existence, especially as it can pass through worlds?

I know that answers will be based on alot of 'perhaps' and 'maybes' but i'm very interested in what others think on this.

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Asked by PHWAORx
on 2010-06-06 20:14:56

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Categories: Our universe.

Tags: Space, Universe, Timetravel, spacetime, Paradox, Afterlife.

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are black-holes the answer to space time travel?
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Asked by alfred
on 2010-05-31 17:05:40

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Categories: Our universe.

Tags: Space, Universe, blackhole, Timetravel.

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Space Time Confusion

If there is a spaceship travelling at nearly the speed of light, say 99.9%, as far as I know an observer will see it has travelled 1 light year in just over a year. However, for a passenger on that ship, time will slow down relative to that observer so will they think they have travelled a light year in less than a year and therefore faster than the speed of light? Is this possible or have I misunderstood something?

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Asked by Philip2511
on 2010-05-21 11:33:48

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Categories: Our universe.

Tags: Space, time, lightspeed.

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Stopping Light It is already possible to stop light in extremely low temperature BEC (Bose- Einstein Condensate) But, if i took say, a space ship and travelled at 300,000 meters per second (The speed of light in a vacuum), relative to Earth, and mounted a light on the back, would the light travelling in the opposite direction to the ship, be travelling at the same speed as the Earth?
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Asked by alexendoo
on 2010-04-20 19:45:48