Pulsar planets are _____.
a. huge gas planets that could be classified as brown dwarfs
b. asteroids captured from interstellar space
c. observed, but not fully understood
d. predicted, but have not been observed
e. Earth-like, and may harbor life
Question 2
Galileo's book Dialogo strongly defended the work of which astronomer?
a. Ptolemy
b. Tycho
c. Copernicus
d. Kepler
e. Aristotle