The projectile had started, and consequently there must have been a detonation.
"Let us first find out where we are," said Barbicane, "and let down this panel."
This very simple operation was soon accomplished.
The nuts which held the bolts to the outer plates of the right-hand scuttle gave way under the pressure of the English wrench. These bolts were pushed outside, and the buffers covered with India-rubber stopped up the holes which let them through. Immediately the outer plate fell back upon its hinges like a porthole, and the lenticular glass which closed the scuttle appeared. A similar one was let into the thick partition on the opposite side of the projectile, another in the top of the dome, and finally a fourth in the middle of the base. They could, therefore, make observations in four different directions; the firmament by the side and most direct windows, the earth or the moon by the upper and under openings in the projectile.
Barbicane and his two companions immediately rushed to the uncovered window. But it was lit by no ray of light. Profound darkness surrounded them, which, however, did not prevent the president from exclaiming:
"No, my friends, we have not fallen back upon the earth; no, nor are we submerged in the Gulf of Mexico. Yes! we are mounting into space. See those stars shining in the night, and that impenetrable darkness heaped up between the earth and us!"
"Hurrah! hurrah!" exclaimed Michel Ardan and Nicholl in one voice.
Indeed, this thick darkness proved that the projectile had left the earth, for the soil, brilliantly lit by the moon-beams would have been visible to the travelers, if they had been lying on its surface. This darkness also showed that the projectile had passed the atmospheric strata, for the diffused light spread in the air would have been reflected on the metal walls, which reflection was wanting. This light would have lit the window, and the window was dark. Doubt was no longer possible; the travelers had left the earth.
"I have lost," said Nicholl.
"I congratulate you," replied Ardan.
"Here are the nine thousand dollars," said the captain, drawing a roll of paper dollars from his pocket.
"Will you have a receipt for it?" asked Barbicane, taking the sum.
"If you do not mind," answered Nicholl; "it is more business-like."
And coolly and seriously, as if he had been at his strong-box, the president drew forth his notebook, tore out a blank leaf, wrote a proper receipt in pencil, dated and signed it with the usual flourish,  and gave it to the captain, who carefully placed it in his pocketbook. Michel Ardan, taking off his hat, bowed to his two companions without speaking. So much formality under such circumstances left him speechless. He had never before seen anything so "American."
 This is a purely French habit.
This affair settled, Barbicane and Nicholl had returned to the window, and were watching the constellations. The stars looked like bright points on the black sky. But from that side they could not see the orb of night, which, traveling from east to west, would rise by degrees toward the zenith. Its absence drew the following remark from Ardan:
"And the moon; will she perchance fail at our rendezvous?"
"Do not alarm yourself," said Barbicane; "our future globe is at its post, but we cannot see her from this side; let us open the other."
"As Barbicane was about leaving the window to open the opposite scuttle, his attention was attracted by the approach of a brilliant object. It was an enormous disc, whose colossal dimension could not be estimated. Its face, which was turned to the earth, was very bright. One might have thought it a small moon reflecting the light of the large one. She advanced with great speed, and seemed to describe an orbit round the earth, which would intersect the passage of the projectile. This body revolved upon its axis, and exhibited the phenomena of all celestial bodies abandoned in space.
"Ah!" exclaimed Michel Ardan, "What is that? another projectile?"
Barbicane did not answer.