Cepheids and globular clusters are limited in their ability to measure the distance to galaxies because they ____.
a. are too rare
b. are not bright enough to detect at large distances
c. behave differently in other galaxies than they do in our own
d. do not appear in dwarf galaxies
e. are only found in elliptical galaxies
Question 2
What telescope instrument is used to counter the eastward rotation of Earth?
a. Newtonian focus
b. sidereal drive
c. active optics
d. Cassegrain focus
e. floppy mirrors
Species richness decreases with distance from the source pool.
A Globular Cluster
Barred Spiral Galaxies
Giant Elliptical Galaxies
Having a time zone map located near the telephone will assist you when making long distance calls ou
To measure engine oil pressure, remove the oil pressure sending (sender) unit usually located near ...