4 ms·
Layman to layman: it's light that hasn't reached us yet. Light that left alpha centuri last week wont get into the cone of visibility for another 4 years. Du
by russell 17y ago
Layman to layman: it's light that hasn't reached us yet. Light that left alpha centuri last week wont get into the cone of visibility for another 4 years. During the period of inflation after the big bang some parts of the universe got so far away so quickly the we will never see those parts.
- ramchip 17y agoI think you're confusing the boundary of the visible universe (the limit after which light cannot have reached us yet) and the unmapped volume the poster is talking about, which is inside this boundary. Alpha Centauri was emitting light just fine 4 years ago so of course it can be mapped.