How do asteroids appear in long exposure images? A) as complex ...

[WhattoUnderstand]

How do asteroids appear in long exposure images?
 
  A) as complex curving and looping lines B) as points of light, like the stars
  C) as resolved disks, like the planets D) as straight lines across a background of stars

Question 2

In the Drake equation (Number of Civilizations = NHP  flife  fciv  fnow), we expect the term fciv to be small if ________.
 
  A) most of the civilizations that have ever existed are still out and about in the galaxy
  B) primitive life is common but intelligent life is rare
  C) most habitable planets never actually get life on them
  D) most civilizations destroy themselves within just a few hundred years of arising

[Kaytorgator]

Answer to Question 1

D

Answer to Question 2

B