Physics is a natural science concerned with the study of matter and it’s relation to space and time. It looks at concepts related to this like energy and force in order to understand the behaviors of the universe.

Observing a Phenomenon Affects Its Outcome


Observation affects outcome

Observing a phenomenon can affect its outcome (observer effect). In science, this refers to particles existing in a state of probability until measured.

The Universe is Mostly Empty Space


Is The Universe Mostly Empty Space?

The universe and everything in it, including humans, is mostly “empty space.” However, space is not actually “empty,” it’s filled with quantum fields and dark energy.

Energy is Neither Created or Destroyed


Energy can’t be created or destroyed and neither can mass. Although energy can change forms, all energy in a closed system must remain constant.

Things Can Actually Touch Each Other


Can Things Actually Touch Each Other?

Things never touch because everything is made of atoms. Atoms contain electrons and electrons repel each other. This is basic physics.

Time is Relative


Time is Relative

Time is relative to speed and gravity (time dilation), and so is space (length contraction). Light speed is constant for all observers, so time and space can’t be.