In fact, the trajectory of the projectile was between the earth and the moon.  As it went farther away from the earth terrestrial attraction would be diminished in inverse proportion to the square of distances, but the lunar attraction would be augmented in the same proportion.  A point must, therefore, be reached where these two attractions would neutralise each other, and the bullet would have no weight at all.  If the volumes of the moon and earth were equal, this point would have been reached at an equal distance between the two bodies.  But by taking their difference of bulk into account it was easy to calculate that this point would be situated at 47/52 of the journey, or at 78,114 leagues from the earth.

At this point a body that had no principle of velocity or movement in itself would remain eternally motionless, being equally attracted by the two heavenly bodies, and nothing drawing it more towards one than the other.

Now if the force of impulsion had been exactly calculated the projectile ought to reach that point with no velocity, having lost all weight like the objects it contained.

What would happen then?  Three hypotheses presented themselves.

Either the projectile would have kept some velocity, and passing the point of equal attraction, would fall on the moon by virtue of the excess of lunar attraction over terrestrial attraction.

Or velocity sufficient to reach the neutral point being wanting, it would fall back on the earth by virtue of the excess of terrestrial attraction over lunar attraction.

Or lastly, endowed with sufficient velocity to reach the neutral point, but insufficient to pass it, it would remain eternally suspended in the same place, like the pretended coffin of Mahomet, between the zenith and nadir.

Such was the situation, and Barbicane clearly explained the consequences to his travelling companions.  They were interested to the highest degree.  How were they to know when they had reached this neutral point, situated at 78,114 leagues from the earth, at the precise moment when neither they nor the objects contained in the projectile should be in any way subject to the laws of weight?

Until now the travellers, though they had remarked that this action diminished little by little, had not yet perceived its total absence.  But that day, about 11 a.m., Nicholl having let a tumbler escape from his hand, instead of falling, it remained suspended in the air.

“Ah!” cried Michel Ardan, “this is a little amusing chemistry!”

And immediately different objects, weapons, bottles, &c, left to themselves, hung suspended as if by miracle.  Diana, too, lifted up by Michel into space, reproduced, but without trickery, the marvellous suspensions effected by Robert-Houdin and Maskelyne and Cook.