Which of the following is TRUE about a flashing light source approaching your direction?

Why does red shift support the idea of the Big Bang Theory?

Who discovered that the universe is expanding?

It is a set of coordinate systems which are at rest relative to each other.

It is an explanation of how speed affects mass, time and space.

Simultaneous events are those that occur at the same time.

Time dilation is one of the consequences of the Special Theory of Relativity.

One consequence of the Principle of Equivalence is the deflection of light in a gravitational field.

Blackholes are thought to have been formed from the gravitationally collapsed remnants of a massive star.

Doppler effect occurs only in light waves.