In the condensation theory of the Moon's origin
a. the Moon broke from a rapidly spinning Earth
b. the Earth and its Moon formed from the same cloud of matter
c. the Moon formed elsewhere in the solar nebula and was later captured by Earth.
d. the Moon formed when a very massive planetesimal smashed into the young Earth.
Question 2
___________ can be used to determine the galaxy's mass if the galaxy is reasonably close so that the Doppler shift of the galaxy disk material can be measured at several distances from the galaxy's center relative to the center.
a. The Hubble constant
b. A galaxy's color
c. A galaxy's rotation curve
d. A galaxy's diameter
e. The velocity dispersion method
The deep-sea vent hypothesis for the origin of life
The Moon’s Interior
Effects of Earth’s Changing Orientation: Solar Angle
Developmental origin of different classes of fruits.
Humans are related to Earth’s other organisms
Origin of replication sequence in E. coli