HubbleSite Special Feature New Views of the Universe
The Telescope
Beyond Hubble
Space/Time Location Planet Star Galaxy Universe
Earth Minutes to Hours Years to Thousands of Years Millions to Billions of Years Billions of Years Time it takes light to reach Earth
The 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.



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