Deuterium abundance suggests that normal matter makes up only 3-4 ...

[darbym82]

Deuterium abundance suggests that normal matter makes up only 3-4 of the critical density.
 
  Indicate whether the statement is true or false

Question 2

At spectral type B1, Spica is about three times hotter than the Sun, so every square cm. of Spica must give off ________ times more energy than our Sun does.
 
  Fill in the blank(s) with correct word

[micaelaswann]

Answer to Question 1

TRUE

Answer to Question 2

81 or 3 to the fourth power

[darbym82]

Excellent

[tranoy]

Wow, this really help