We are limited by the amount of light we can measure with our current technology, which, by historical standard, is pretty good. We can see, currently, that our universe is about 46 billion light years across (Dr. Luke Davies, October 5, 2015, Phys.Org), which is a HUGE amount of space to cover taking almost 14 billion years.
One light year is the distance light would travel in a single year, the speed of light...
We are limited by the amount of light we can measure with our current technology, which, by historical standard, is pretty good. We can see, currently, that our universe is about 46 billion light years across (Dr. Luke Davies, October 5, 2015, Phys.Org), which is a HUGE amount of space to cover taking almost 14 billion years.
One light year is the distance light would travel in a single year, the speed of light being the fastest speed in our known universe (186,000 miles per second). Our closest galaxy to our own Milky Way Galaxy is the Andromeda Galaxy, about 2.5 million light years away.
So when we talk about an "infinite universe," we are limited by what we can actually see, measure and report on. Our current space travel to attempt to cover some of these spacial distances are puny as well.
In our entire space program history, we have only sent manned space flights to our moon. In terms of distance, that isn't even a drop in the bucket when compared to the distance it would take to cross our known universe. So how big is our universe? It's bigger than 46 billion light years in distance across.
No comments:
Post a Comment