Looking into Space!

Here are a couple of photo slides explaining how we can look back in time, when we look up at the stars through a telescope.

Light takes time to travel to Earth, and we measure it in Light Years.  So, when we look up at the object – we are actually looking back to when it first started to send its light image towards us – back in time.  Crazy concept, isn’t it!  😎


travels at 300,000 km/s. So we see things as they were some time ago. The farther away, the further back in time we are looking. 1 billion LY means looking 1 billion years back in time. So, when we see the stars, we are actually looking at light which was emitted long ago.