Explain how the Doppler Effect has been used to detect invisible ...

[evelyn o bentley]

Explain how the Doppler Effect has been used to detect invisible planets orbiting other Sun-like stars.
 
  What will be an ideal response?

Question 2

As a protostar evolves from stage 4 to stage 6, it gets hotter but much less bright.
 
  Indicate whether the statement is true or false

[ebenov]

Answer to Question 1

The Jupiter-like planets are massive enough to pull their star slightly off course as they orbit from one side to the other, producing a cycle of red and blue shifts that allow us to deduce that the planet is present, and how long it takes to orbit its star.

Answer to Question 2

TRUE

[evelyn o bentley]

Wow, this really help

[alexanderhamilton]

TYSM