In the late 1990's, it was discovered from distances of ...

[robinn137]

In the late 1990's, it was discovered from distances of ___________ in distant galaxies that the expansion of the Universe is ___________.
 
  a. Cepheid variables; accelerating
  b. Cepheid variables; decelerating
  c. supernovae; accelerating
  d. supernovae; decelerating

Question 2

Very massive stars lose their outer layers in a planetary nebula.
 
  a. True
  b. False
  Indicate whether the statement is true or false

[Sassygurl126]

Answer to Question 1

c

Answer to Question 2

False

[robinn137]

Gracias!

[juliaf]

Thanks for the timely response, appreciate it