How is it possible that life cycles of stars are so well ...

[anshika]

How is it possible that life cycles of stars are so well understood and tested, even though they can take billions of years to happen?
 
  What will be an ideal response?

Question 2

All the jovian planets lie beyond the asteroid belt.
 
  Indicate whether the statement is true or false

[ryrychapman11]

Answer to Question 1

Astronomers have observed many, many stars at all different stages of their lives. This makes it possible to assemble a complete sequence of steps and to test theoretical models.

Answer to Question 2

TRUE

[anshika]

Thanks for the timely response, appreciate it

[aliotak]

YES! Correct, THANKS for helping me on my review