Here's why:

* Gravity is a fundamental force of nature. It's what keeps us on the ground, the Moon orbiting Earth, and the planets orbiting the Sun.

* Every object, no matter how small, has mass. Mass is a measure of how much matter an object contains.

* Gravity is a result of mass. The more mass an object has, the stronger its gravitational pull.

Why we feel gravity from large objects:

Even though small objects have gravity, we don't feel it because it's very weak. Large objects, like planets and stars, have a lot of mass, so their gravitational pull is much stronger. That's why we feel Earth's gravity, but not the gravity of a nearby rock.

Think of it this way:

Imagine a trampoline. A small marble wouldn't create much of a dent. But a heavy bowling ball would make a big dip. Gravity is like the dent, and the bigger the object (more mass), the bigger the "dent" (stronger gravity).