What is the Cassini division of Saturn's rings?
A) a dark ring, visible from Earth, composed of dark, dusty particles
B) a large gap, visible from Earth
C) the imaginary circle marking the halfway point of Saturn's rings
D) the widest ring of Saturn, located between two large ring gaps
E) the most opaque ring of Saturn, made of highly reflective ice particles
Question 2
Because of its slow rotation period, Venus:
A) appears to go through phases like the Moon.
B) gets closer to Earth than any other planet.
C) presents the same side to the Sun all the time.
D) presents the same side to Earth all the time.
E) presents the same side to Earth at each closest approach.
Mira as seen from the Earth
The Interiors of Earth and Mercury
Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called
Low-molecular-weight precursors to the purine ring
Which one is more healthier? DARK, MILK or WHITE chocolate
Earth’s Spheres