What is Gravity?

It’s invisible. You can’t smell it. You can’t taste it, but if you fall off a tree, you will definitely feel its presence. It is gravity. One of the mysteries of the universe that keeps us together, literally.

Gravitational Pull
Illustration showing Earth, moon and tidal influence


Simply put, gravity is an entity that draws objects inward and when this happens, interesting things occur. All planets’ moons rotate around their planet due to the its gravitational pull. Planets rotate around their stars, because of the stars’ gravitational pull, and stars rotate around their galaxy’s black hole, which has a mind boggling gravitational force within it.

How Gravity is Formed

Nebulas contain random masses of gas and dust. When this gas and dust start combining, gravity begins to build, which then attracts more matter to combine with the mass. Subsequently, it causes planets to be formed. If the forming mass is large enough, stars will eventually be created. And onward it goes, (over billions of years), eventually entire solar systems are created, all due to the mysterious force of gravity.

Our moon has gravity as well, but since it is much smaller than Earth, it only has a minimal effect on our planet. The oceans feel the moon’s gravitational pull, which is why we see tides moving in and out.

The Moon’s Influence of Title Waves on Earth

In summary, the more massive the object is the more mass it has and the stronger its gravitational pull will be, so gravity is proportional to mass. In addition, the closer an object is to another object, the stronger its gravitational pull will be on that object as well.

What is Gravity? Explained in more detail below.

Interesting Facts on Astronomy and the Universe