An object can move faster than light realative to another object but only as a result of space expansion(Hubble Sphere etc.). The objects are not traveling through space, space is creating the movement. You can't travel faster than light through space but you can compared to another object in...
The world map of the universe is the now, the world picture is the universe as it appears to be but isn't. The simultaneity of an event has nothing to do with the time an observer receives information or the amount of time dilation they are experiencing. Most events that seem to be simultaneous...
There are those in the science community who fancy the idea of time travel to be a reality. I have a problem with their desciption of what time is as well as their grandios mathimatical theories describing Time travel. First of all let me get this out of the way. I believe in absolute time. Yes...
Acceleration of the universe is expanding space. How then does gravitation and dark energy play a role? Gravitation attracts matter while dark energy repulses it. Space is not matter (in the non-quantum sense). It should not be effected by either (other than curviture). Gravitationaly bound...
"distances between things" can be misleading.Yes expansion creates distance between things but so does peculiar motion.Of the two,the first is space moving and takeing objects with it.These are static objects said to be co-moving in expanding space.The second are objects moving Thru space...
If I use light years to describe large reception distances,say 10 billion,am I also stateing the light travel time? The way I figure it at these distances you would have to increase the light travel time useing the Hubble constant to quantify the increase in space a photon would have to travel...