What's the farthest point humans have explored? By using powerful telescopes on land and space, what's the farthest point humans have explored or viewed?
This is a really interesting question to many and it deserves an answer post even if folks close it.
In Wikipedia's List of the most distant astronomical objects we can see that the distances that the light travelled to get to us are all around 13 giga light years, and it's no coincidence that the age of the universe is also about 13 billion years.
We can't really call that the actual distance to the object because the size of the universe is changing and the size of the observable universe is changing as well.
So while we like to say we are seeing really really far away, we should really think about it as seeing really really far back in time, because on the scale of the universe the speed of light is actually incredibly slow :-)
No matter how big of a telescope we build with unbelievable light gathering power, we'll never be able to see &quot;farther&quot; than a certain distance. There's a currently unknowably larger universe out there whose light and gravity has not and probably never will reach us
It's almost certainly based on current understanding, but that's subject to change of course ;-)