Note
The alignment of Jupiter's four major moons in the book can never happen in reality. The three inner Galilean satellites are in a resonance with one other such that that whenever two of them are aligned with one another, the third one will always be non-aligned and quite often situated on the opposite side of Jupiter.
Heinlein also postulated that the surface of Ganymede was volcanic rock like the Moon. Subsequent discoveries have shown that Ganymede's crust is actually almost 90% ice or frost, covering a subsurface ocean.
Read more about this topic: Farmer In The Sky
Famous quotes containing the word note:
“And songs climb out of the flames of the near campfires,
Pale, pastel things exquisite in their frailness
With a note or two to indicate it isn’t lost,
On them at least. The songs decorate our notion of the world
And mark its limits, like a frieze of soap-bubbles.”
—John Ashbery (b. 1927)
“The finch, the sparrow, and the lark,
The plainsong cuckoo grey,
Whose note full many a man doth mark
And dares not answer nay.”
—William Shakespeare (1564–1616)
“The note of the white-throated sparrow, a very inspiriting but almost wiry sound, was first heard in the morning, and with this all the woods rang. This was the prevailing bird in the northern part of Maine. The forest generally was alive with them at this season, and they were proportionally numerous and musical about Bangor. They evidently breed in that State.”
—Henry David Thoreau (1817–1862)