* The objects have very small masses. Gravity is a relatively weak force. The smaller the mass of the objects, the weaker the gravitational pull between them.
* The objects are very far apart. The force of gravity decreases rapidly with distance. The farther apart two objects are, the weaker the gravitational force between them.
Examples:
* Two small rocks on a table: The gravitational force between them is incredibly weak and practically undetectable.
* You and a pen on your desk: While there is a gravitational attraction, it is far outweighed by the much stronger normal force from the desk.
* Two galaxies far apart: The force of gravity between galaxies is significant, but it would be extremely difficult to measure directly due to the vast distances involved.
Note: Even though gravity is weak, it's a long-range force. This means that even if the objects are far apart, they still exert a gravitational pull on each other, it just becomes extremely weak.
