33. Q. When and by whom were they discovered? A. In August, 1877, by
Prof. Hall, of Washington, D. C.
34. Q. How many asteroids have been discovered up to the present year?
A. Two-hundred and twenty-three.
35. Q. What is the distance of the asteroids from the sun? A. From two
hundred million to three hundred and fifteen million miles.
36. Q. What are the diameters of the asteroids? A. From twenty to four
hundred miles.
37. Q. How does the mass of all the asteroids compare with that of the
earth? A. It is less than one-fourth of the earth.
38. Q. Since what time have all the asteroids known been discovered? A.
Since the commencement of the present century.
39. Q. What is the mean distance of Jupiter from the sun? A.
475,692,000 miles.
40. Q. What is the mean diameter of Jupiter? A. Eighty-six thousand
miles.
41. Q. What is the volume of Jupiter compared with that of the earth?
A. It is thirteen hundred times larger.