In brightness, Jupiter is second only to the planet ________ most ...

[TFauchery]

In brightness, Jupiter is second only to the planet ________ most of the time.
 
  A) Uranus B) Venus C) Saturn D) Jupiter E) Mars

Question 2

Why was deuterium so critical in the primordial nucleosynthesis?
 
  What will be an ideal response?

[trampas]

Answer to Question 1

B

Answer to Question 2

Formed at 900 million K, when protons and neutrons fused, it was the critical link to forming both He-3 and finally He-4 in the first few minutes of creation.

[TFauchery]

YES! Correct, THANKS for helping me on my review

[parker125]

Thanks for the timely response, appreciate it