Meanwhile the day passed without incident. Terrestrial midnight came. The 8th of December was about to commence. Another hour and the point of equal attraction would be reached. What velocity then animated the projectile? They could form no estimate; but no error could vitiate Barbicane's calculations. At 1 a.m. that velocity ought to be and would be nil.
Besides, another phenomenon would mark the stopping point of the projectile on the neutral line. In that spot the two attractions, terrestrial and lunar, would be annihilated. Objects would not weigh anything. This singular fact, which had so curiously surprised Barbicane and his companions before, must again come about under identical circumstances. It was at that precise moment they must act.
The conical summit of the bullet had already sensibly turned towards the lunar disc. The projectile was just right for utilising all the recoil produced by setting fire to the apparatus. Chance was therefore in the travellers' favour. If the velocity of the projectile were to be absolutely annihilated upon the neutral point, a given motion, however slight, towards the moon would determine its fall.
"Five minutes to one," said Nicholl.
"Everything is ready," answered Michel Ardan, directing his match towards the flame of the gas.
"Wait!" said Barbicane, chronometer in hand.
At that moment weight had no effect. The travellers felt its complete disappearance in themselves. They were near the neutral point if they had not reached it.
"One o'clock!" said Barbicane.
Michel Ardan put his match to a contrivance that put all the fuses into instantaneous communication. No detonation was heard outside, where air was wanting, but through the port-lights Barbicane saw the prolonged flame, which was immediately extinguished.
The projectile had a slight shock which was very sensibly felt in the interior.