1. Theory says the universe is expanding faster than light's speed. 2. If (1) is true, why we can see stars ten of billions years away? (universe life 13.8 billion years) I assume the star's light is not able to reach us because the space between them and us are getting wider faster than the speed of light.. 3. How do we know the universe is 13.8 billion years old? How to measure it?