[upchuck]

Gravity.

[dr_lew]

That is namely Newton's Law of Universal Gravitation ...

Then ye who now on heavenly nectar fare,
Come celebrate with me in song the name
Of Newton, to the Muses dear; for he
Unlocked the hidden treasuries of Truth:
So richly through his mind had Phoebus cast
The radiance of his own divinity.
Nearer the gods no mortal may approach.

from Halley's Ode to Newton