"And we shall fall back to the Earth!"
"Oh!"
"Ah!"
They could say no more. This fearful revelation took them like a stroke
of apoplexy.
CHAPTER V.
THE COLDS OF SPACE.
How could they imagine that the Observatory men had committed such a
blunder? Barbican would not believe it possible. He made the Captain go
over his calculation again and again; but no flaw was to be found in it.
He himself carefully examined it, figure after figure, but he could find
nothing wrong. They both took up the formula and subjected it to the
strongest tests; but it was invulnerable. There was no denying the fact.
The Cambridge professors had undoubtedly blundered in saying that an
initial velocity of 12,000 yards a second would be enough to carry them
to the neutral point. A velocity of nearly 18,000 yards would be the
very lowest required for such a purpose. They had simply forgotten to
allow a third for friction.
The three friends kept profound silence for some time. Breakfast now was
the last thing thought of. Barbican, with teeth grating, fingers
clutching, and eye-brows closely contracting, gazed grimly through the
window. The Captain, as a last resource, once more examined his
calculations, earnestly hoping to find a figure wrong.
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