Catastrophes are NOT needed to explain:
A) the exceptionally large nickel-iron core of Mercury.
B) the asteroid belt.
C) our Moon.
D) the tilt of Uranus.
E) the appearance of Miranda's surface.
Question 2
An extraterrestrial observer would pick up the strongest radio signals when:
A) the Earth was at perihelion.
B) North America was either rising or setting for the observer.
C) North America was directly in front of the observers.
D) at new or full Moon.
E) Saturday Night Live is on.
