The numbers refer to the actual questions in the ISP205L lab-book.

5.5.2

• A preexisting crater exists at (160,118) [the coordinates].

6.5.8 [In describing a measurement of the distance to Pluto]

• The Earth is also an object a little smaller than Jupiter at a distance using angles to measure it's distance.
• It is easier to measure large objects using a conversion factor.

7.4.1

• This spectrum had thick colors in it that touched each other.

7.4.3

• Some lines are thicker than others and some have more lines.

7.4.4

• It appears as though there are more lines, but these are just colors.

8.4.1

• In Angstrograms the lines are 5.9 Å apart.

8.4.6

• Oxygen is a gas that flows east to west in the atmosphere. So it stays level in the atmosphere it doesn't sway.
• The oxygen is not moving toward us or away from us, it just exists in the atmosphere.
• The oxygen is the earths atmosphere and we are looking through it because of the Doppler shift.

8.5.4

• Both answers are extremely different.
• The period of rotation is not longer [at the equator] because the sun is made of plasma, and one cannot measure plasma.

12.5.2 [On listing sources of error]

• Inaccuracy of equipment used to measure imprecision.
• Inability to calculate precise pixel measurement.
• Not going to the outer edge of the deep purple due to visual abilities (color blindness).
• A black hole uses it's mysteriuos powers to alter galactic speeds/motion.

12.5.3

• Used by finding slope on calculator.

12.5.4 [Commenting on Hubbles value for the Hubble constant]

• Our data is more accurate because the universe is constantly expanding, making our data more recent.
• We have more advanced programs [Excel!!!] and ways of computing to find a more accurate answer.
• Because we have more [4!!!] galaxies than him.

13.3.1

• The path of the galaxies are curved because they orbit each other.

13.3.3

• The galaxies stay in a circular path because the gravitational velocity is less and keeps it bound.

13.5.1 [commenting on the size of a galaxy].

• It's very unusually large