The cosmic microwave background is:
A) redshifted in the direction of Earth's motion.
B) redshifted in the direction of the Sun's motion.
C) redshifted in the direction of the center of the Milky Way.
D) blueshifted in the direction of Earth's motion.
E) blueshifted in the direction of the Virgo Cluster.
Question 2
If the Sun were replaced by a one solar mass black hole:
A) all terrestrial planets would fall in immediately.
B) we would still orbit it in a period of one year.
C) we would immediately escape into deep space, driven out by its radiation.
D) our clocks would all stop.
E) life here would be unchanged.
Size comparison of Earth and Mars.
Range of Motion of the Temporomandibular Joint, Pushing Out the Lower Jaw
Range of Motion of the Shoulder Joint, Internal Rotation
The Tilt of Earth’s Axis
Overview of lymphatic system structures and the general direction of lymph flow from the extremities ...
Precession: Earth’s axis rotates, or “wobbles”