Short explanations would be helpful :) One of the most difficult parts of constructing an accurate model for planetary motions is that planets seem to wander among the stars. During their normal (or prograde) motion, planets appear to move from west to east over many consecutive nights as seen against the background stars. However, they occasionally (and predictably) appear to reverse direction and move east to west over consecutive nights as seen against the background stars. This backward motion is called retrograde motion. Shown below are the positions of a mystery planet against distant background stars over the course of numerous consecutive nights.Use the figure from Question 1 to answer the following question. When the planet was farthest to the west, what was the azimuth value of the planet? begin{tabular}{l} 175 180 120 170 150 hline 240 hline 140 hline 210 end{tabular}Use the figure from Question 1 to answer the following question. On what date was the mystery planet located farthest to the east? July 15 May 1 July 1 June 1 May 15 August 1 August 15 June 15Use the figure from Question 1 to answer the following question. When the planet was farthest to the east, what was the azimuth value of the planet? begin{tabular}{l} 190 hline 210 150 240 hline 140 hline 180 hline 170 hline 120 end{tabular}When a planet exhibits prograde motion, in what direction does it appear to move across the sky with respect to background stars after at least a couple of consecutive nights? The planet is not visible. The planet moves from west to east. The planet moves from east to west.Use the figure from Question 1 to answer the following question. During which dates does the mystery planet appear to move with normal, prograde motion as compared to the background stars? Between June 15 and July 15 only Between May 1 and June 15, and between July 15 and August 15 Between May 1 and June 15 only Between July 15 and August 15 only Between June 15 and July 15, and between August 1 and August 15When a planet exhibits retrograde motion, in what direction does it appear to move across the sky with respect to background stars after at least a couple of consecutive nights? The planet moves from west to east. The planet moves from east to west. The planet is not visible. The planet doesn't move at all.Use the figure from Question 1 to answer the following question. During which dates does the mystery planet appear to move with backward, retrograde motion as compared to the background stars? Between July 15 and August 15 only Between May 1 and June 15 only Between June 15 and July 15, and between August 1 and August 15 Between May 1 and June 15, and between July 15 and August 15 Between June 15 and July 15 only.

1. Short explanations would be helpful :)
One of the most difficult parts of constructing an accurate model for planetary motions is that
planets seem to wander among the stars. During their normal (or prograde) motion, planets
appear to move from west to east over many consecutive nights as seen against the background
stars. However, they occasionally (and predictably) appear to reverse direction and move east to
west over consecutive nights as seen against the background stars. This backward motion is
called retrograde motion. Shown below are the positions of a mystery planet against distant
background stars over the course of numerous consecutive nights.Use the figure from Question 1
to answer the following question. When the planet was farthest to the west, what was the azimuth
value of the planet? begin{tabular}{l} 175 180 120 170 150 hline 240 hline 140 hline 210
end{tabular}Use the figure from Question 1 to answer the following question. On what date was
the mystery planet located farthest to the east? July 15 May 1 July 1 June 1 May 15 August 1
August 15 June 15Use the figure from Question 1 to answer the following question. When the
planet was farthest to the east, what was the azimuth value of the planet? begin{tabular}{l} 190
hline 210 150 240 hline 140 hline 180 hline 170 hline 120 end{tabular}When a planet exhibits
prograde motion, in what direction does it appear to move across the sky with respect to
background stars after at least a couple of consecutive nights? The planet is not visible. The
planet moves from west to east. The planet moves from east to west.Use the figure from Question
1 to answer the following question. During which dates does the mystery planet appear to move
with normal, prograde motion as compared to the background stars? Between June 15 and July
15 only Between May 1 and June 15, and between July 15 and August 15 Between May 1 and
June 15 only Between July 15 and August 15 only Between June 15 and July 15, and between
August 1 and August 15When a planet exhibits retrograde motion, in what direction does it appear
to move across the sky with respect to background stars after at least a couple of consecutive
nights? The planet moves from west to east. The planet moves from east to west. The planet is
not visible. The planet doesn't move at all.Use the figure from Question 1 to answer the following
question. During which dates does the mystery planet appear to move with backward, retrograde
motion as compared to the background stars? Between July 15 and August 15 only Between May
1 and June 15 only Between June 15 and July 15, and between August 1 and August 15 Between
May 1 and June 15, and between July 15 and August 15 Between June 15 and July 15 only