Author Question: During the nuclear epoch, the temperatures were: A) higher than 1032 K. B) about a trillion ... (Read 45 times)

penguins · **on:** Jul 27, 2018

During the nuclear epoch, the temperatures were:

A) higher than 1032 K.
B) about a trillion degrees.
C) comparable to the temperatures inside giant stars today.
D) less than 10 million K.
E) between 3,000 and 16,000 K.

Question 2

What is aerobraking?

A) the technique of using a planetary atmosphere to change the orbit of a spacecraft
B) the use of a planetary atmosphere to redirect a spacecraft to another planet
C) the controlled landing of a spacecraft on a planetary surface
D) the gradual decrease of speed as a spacecraft leaves the solar system
E) the destruction of a spacecraft by the intense pressure as it descends into the atmosphere