The Naked Scientists

The Naked Scientists Forum

Author Topic: Will our own sunlight return to Earth one day?  (Read 1075 times)

Offline andreiperi

  • First timers
  • *
  • Posts: 2
    • View Profile
Will our own sunlight return to Earth one day?
« on: 01/02/2012 14:32:19 »
can we be looking at our own Sun (or earth for that matter) while watching the night sky ?
Can light which has looped back to us after travelling through space for many light years, reveal to us  our own distant past through a powerful telescope ?
« Last Edit: 02/02/2012 10:50:46 by chris »


 

Offline syhprum

  • Neilep Level Member
  • ******
  • Posts: 3813
  • Thanked: 19 times
    • View Profile
Re: sun light loopback
« Reply #1 on: 01/02/2012 14:55:32 »
No even if space was curved in such a manner that light travelled a complete circuit around the universe the time delay would be such that we would be seeing our local area long before the solar system came into being.
 

Offline andreiperi

  • First timers
  • *
  • Posts: 2
    • View Profile
Re: sun light loopback
« Reply #2 on: 01/02/2012 17:48:51 »
Good thinking concerning the curveture of the universe.
What if there was such an arrangement of stars in our galaxy as to cause the light to curve back to us ?
 

The Naked Scientists Forum

Re: sun light loopback
« Reply #2 on: 01/02/2012 17:48:51 »

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums