Author Question: A star can remain in the giant-star stage for about 90 percent of its total lifetime before it dies. ... (Read 98 times)

bcretired · **on:** Jul 27, 2018

A star can remain in the giant-star stage for about 90 percent of its total lifetime before it dies.

Indicate whether the statement is true or false

Question 2

As light travels out of a gravitational field, it gains energy, and its wavelength becomes shorter.

Indicate whether the statement is true or false