Replies

"While this may imply that at least one of these galaxie is traveling faster than lightspeed..."

If it were traveling faster than the speed of light, than it would have to be even further away than calculated at 10 billion ly. For if we are seeing it at 10billion ly, and it is 20billion ly apart from the opposite galaxy, and the universe is 15 billion years old, than it is traveling faster than the speed of light.

Which means it is actually 15 billion ly away from us.

Or the light we are seeing was generated at 5 billion ly away, and is just arriving here, which means the galaxy has been travling an additional 5 billion ly, making 10 all together. If that light is only 5 billion years old, than the light we are seeing from the other dirction is only 5 billion ly away, making the lights we are seeing only 10 billion ly apart from the light in the opposite direction.

In either case, the galaxies are futher apart thn 15 billion ly, so one of them or both are traveling at speeds greater than light.

OR the calculations are all off, light can travel at variable speeds, and the scientist are all lying atheist.

uh nope.

if I stand 20 feet away from you, and 20 feet away from someone else, that does not mean that you and that person are 40 feet apart. In fact you can be standing next to each other, and each be 20 feet from me.

if we were all in a line, and I was in the middle and you each were 20 feet away, only under that condition would you be 40 feet apart. This is the assumption that you apparently are making here, but nothing in the situation shows this to be true.

Being that you and the other guy are each 20 feet away from me, can put either or both of you anywhere in a circle with a radius of 20 feet, independently of the other person's location.

And that is only in two dimensions. add a third and things get worse.

in any case, only if all three objects are colinear can we make the leap of faith that states that therefore their relative distance is twice their distance from us. Nothing in the supposition states that.

the distance estimate MAY be true, but it is hardly proven.

The speed of light is only a limit on the speed of transmitted energy within spacetime. If spacetime is expanding as Big Bang theory suggests, two points within the universe could be receding from each other at greater than the speed of light without exceeding the speed of light in their local space-time.

Say you had two ants standing on an uninflated baloon - if you blow up the balloon, the distance between the two ants will rapidly increase even if the ants don't move.