The sky is dark at night:
A) because the stars in the Milky Way are far away.
B) because the Sun is on the other side of Earth.
C) because there are far fewer stars on the night side of Earth.
D) because all the light from all the objects in the universe hasn't arrived here yet.
E) because the quasars are too far away from Earth for their light to have arrived here.
Question 2
The Moon's Orientale and Mercury's ________ Basin are both huge, multiringed impact scars.
Fill in the blank(s) with correct word
Dark Matter
Rising and Setting of Stars at the Equator
The same star field photographed with (a) a ground-based telescope, which is subject to poor seeing
A Typical Pattern of Sleep Stages During a Single Night
Breathe Carolina & Shanahan ft. Haliene - Stars & Moon
Night Attack on the Sanjo Palace (detail), from the Scrolls of Events of the Heiji Period.