Galileo's observations of sunspots proved the Sun was rotating, like the Earth.
Indicate whether the statement is true or false
Question 2
We know that there are large gaps in the average distances of asteroids from the Sun (within the asteroid belt) because we
A) see the gaps through telescopes.
B) see the gaps via stellar occultation.
C) know they are there theoretically, although we haven't detected them.
D) actually don't know whether there really are gaps or not.
E) have plotted distributions of the orbital radii of the asteroids.
Size comparison of Earth and Mars.
Rotating Furnace for Making Parabolic Telescope Mirrors
6-8 Earth’s Major Tectonic Plates
Earth’s Spheres
Earth’s orientation
Earth’s Layered Structure