Explain why interstellar molecules are best observed at radio ...

[jon_i]

Explain why interstellar molecules are best observed at radio wavelengths.
 
  What will be an ideal response?

Question 2

Sound waves in the early universe traveled faster than half of the speed of light.
 
  Indicate whether the statement is true or false

[essyface1]

Answer to Question 1

Interstellar molecules are best observed and studied through their radio emissions because most interstellar molecules are located in cold molecular clouds. In these locations molecules are rarely excited by any means except rotation and vibration. These excitations are very low-energy. Because of the low energy involved in these excitations, very low energy photons are emitted.

Answer to Question 2

TRUE

[jon_i]

YES! Correct, THANKS for helping me on my review

[connor417]

Excellent