Author Question: Observed temperature fluctuations in the Cosmic Microwave Background Radiation are: A) millions ... (Read 65 times)

cookcarl · **on:** Jul 27, 2018

Observed temperature fluctuations in the Cosmic Microwave Background Radiation are:

A) millions of kelvins.
B) hundreds of kelvins.
C) a few kelvins.
D) tens of millionths of a kelvin.
E) immeasurably small.

Question 2

Why was the summer of 2003 a fine time for Mars observers?

A) The Mars Rovers returned live images from the surface.
B) The skies were unusually clear and calm.
C) Mars' north pole was tilted to face the Earth head-on.
D) Mars was closer to us than it has been in over 50,000 years.
E) Mars was even brighter than Venus for several weeks.