* Light Travel Time: The farther an object is from us, the longer it takes for its light to reach us. So, when we look at a galaxy billions of light-years away, we're seeing it as it was billions of years ago.
* Hubble's Limits: Hubble's maximum observable distance is limited by a few factors:
* Sensitivity: It can only detect faint objects up to a certain point.
* Redshift: As light travels vast distances, it gets stretched, shifting towards redder wavelengths. Extremely distant objects are so redshifted that Hubble's instruments can't detect them.
* Estimated Distance: Astronomers estimate that Hubble can see objects up to 13.4 billion light-years away. This corresponds to when the Universe was just a few hundred million years old.
Important Note: This isn't a physical boundary. It's more about the limits of our current technology. Future telescopes like the James Webb Space Telescope can see even farther into the early Universe.
So, while there's no single "distance" Hubble can see, it allows us to peer back in time and observe the universe's early stages.
