She stumbled backward, all balance lost, and gravity took her to the ground.

Or perhaps the region that gravity of the planet would take hold and pull it in for an impact?

But as gravity takes effect, these gases collect to become stars, planets, and so on.

It sickened me to see the gravity take hold and yank her down.

Needless to say, the weak lunar gravity takes some getting used to.

Once, the artificial gravity took hold, throwing him to the deck.

The gravity had taken most of the energy out of me.

He let the artificial gravity take hold of him and then stepped smoothly to the door to the bridge, which opened.

The crucifix came away from the wall, and all he had to do was step aside to let gravity take it.

The dog turned in the air, hanging for a moment before gravity took hold.