For several decades, astronomers and cosmologists have been piling up data that indicates most of the matter in the Universe is dark, interacting only via gravity.
During those times, the proximity of the planets will allow them to interact via gravity, which will speed up some orbits while slowing down others.
Finally, selected cells are collected in the tube cap which is under the slide via gravity.
Some brands come with a spout and pour from the bottom via gravity, while others may use a low cost pressurized tap.
The water falls to the reactor via gravity, allowing the condenser to fill with steam, which then condenses.
The tunnel drains the nine major minepools in the area via gravity.
In the event of the seat not firing, it was possible to manually release the lower fuselage hatch and then exit the aircraft via gravity.
It is also possible that dark matter consists of very heavy hidden sector particles which only interact with ordinary matter via gravity.
We also know that it is not unprecedented for particles to interact via only the weak force and gravity (neutrinos).
A16 The evolution of the cosmos via gravity is the focus of a study using the largest computer simulation of the universe ever attempted.