If the Andromeda Galaxy collided with the Milky Way, what would most likely happen to Earth?
A) The Sun and all its planets would be crushed by collisions with stars and planets from the Andromeda Galaxy.
B) Nothing.
C) The Sun would not be disturbed, but the solar system would be ripped apart.
D) The Sun will turn into a red giant and explode.
Question 2
How does the explosion of a nuclear bomb provide evidence for the theory of relativity?
A) The mass of the bomb when it explodes is much greater than its normal mass.
B) bomb causes things in its vicinity to move at very high speeds, allowing scientists to measure effects of time dilation.
C) The bomb shortens the lifetimes of all people who happen to be near it when it detonates.
D) The bomb converts rest-mass energy into thermal energy in accord with E = mc2, which is part of the theory of relativity.
The Sun as it appears from the surface of Earth before sunset.
Mira as seen from the Earth
Rivers on Mars and Earth
Earth’s Revolution and Rotation
Earth’s orientation
Earth’s Spheres