light Hubble sees today may have taken thousands, millions, even billions
of years to reach us, carrying the story of events that happened in
the distant past. Click on the pictures at the top of this page to
see how far we are looking back through time.
|Our galaxy is
100,000 light-years across, which means that light takes that long
to travel from one end to the other. The region that Hubble observes
best (because the view is not blocked by dust) extends from a few
light-years to a few thousand light-years away. This means that light
now arriving from these objects left sometime during human history.