Which explanation is based on empirical evidence? A. Observations made using telescopes confirm that Earth orbits the
Sun.
B. The relative positions of the Sun, Earth, and stars can affect
human events.
C. Ancient texts reveal that the universe is about 6,000 years old.
D. The arrangements of stars into constellations happened as a
result of the actions of supernatural beings.

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.

Estimate of the number of stars in our galaxy

Which evidence is lost likely used to indicate the beginning of solar system formation?