Charon's orbit
A) is retrograde.
B) lies exactly in Pluto's orbital plane.
C) is highly inclined to Pluto's orbital plane.
D) is perpendicular to Pluto's equator.
E) has not been determined yet.
Question 2
Which of the following best describes why we have seasons on Earth?
A) The tilt of Earth's axis causes different portions of the Earth to receive more or less direct sunlight at different times of year.
B) The varying speed of Earth in its orbit around the Sun gives us summer when we are moving fastest and winter when we are moving slowest.
C) The tilt of Earth's axis causes the northern hemisphere to be closer to the Sun than the southern hemisphere in summer, and vice versa in winter.
D) Earth's elliptical orbit means we are closer to the Sun and therefore receive more intense sunlight at some times of year than at others.
Impetigo, a highly contagious bacterial infection.
Mercury’s Orbit Explained by General Relativity
Richmond, Virginia, lies in ruins in April 1865 at the time of Lincoln’s visit—and a few days before
Although crassly put by the cartoonist, behind the glass ceiling lies this background assumption.