You have to ask the right questions

 To get the right answers, you have to ask the right questions.

The fundamental questions of physics are: 1) "What is motion?" 2) "What is time?" 3) "What is space?" 4) "What is spacetime?"

The answers to these questions turn out to be ridiculously simple.

1. Standing wave in spacetime. (If motion and gravity (spacetime curvature) have the same effects, they must have similar causes. Note that a tangent to the curvature of spacetime is literally distance over time.)

2. Steadily increasing linear eccentricity (C) of a hyperbola. (The focus is steadily moving away from the origin.) A^2 - B^2 = C^2

3. Steadily increasing radius of a sphere with center at the focus of the time hyperbola. (Distance C from the origin.) A^2 + B^2 = C^2

4. Potential energy field with a fixed maximum, from which all other fields draw their energy. (Total energy everywhere is a constant.) There being no such thing as negative energy, there is also a fixed minimum. This is where black holes show up, and why they are hollow shells of maximal density with nothing inside.

The universe is an expanding sphere in an ever expanding light speed cone defining a hyperbola which is time. As my daughter said, we are tiny sprinkles in the ice cream cone of existence.

Hypothesis: At creation, antimatter and "negative energy" went into the cone extending the other way from the origin. Thus, everything really does sum up to zero over the largest view.