Almost all stars on the main sequence range from 0.1 to 15 solar ...

[crazycityslicker]

Almost all stars on the main sequence range from 0.1 to 15 solar radii.
 
  Indicate whether the statement is true or false

Question 2

What is meant by the event horizon?
 
  What will be an ideal response?

[zoeyesther]

Answer to Question 1

TRUE

Answer to Question 2

When a mass has contracted to a certain radius, the Schwartzschild radius, gravity at its surface is so high that the escape velocity is the speed of light. The event horizon is the imaginary surface of a sphere with this radius. Even if the mass continues shrinking, anything passing inside this radius cannot escape the pull of gravity.

[crazycityslicker]

Thanks

[zoeyesther]

Welcome