A body does not travel through space. Relative to absolute space itself a body is completely motionless. Although Michelson's many experiments in his quest to find our planet's motion through the hypothetical aether in space failed, his experiments were successful in that he discovered one of the most fundamental characteristics of nature. He failed to realize this however and thought his quest to prove the existence of aether was a failure. Actually he proved that universal space is one single entity - a body does not move relative to absolute space, only to other bodies - probably the greatest discovery of the 19th century - and yet still unrecognized by today's science.

One of the most fundamental laws of nature is the law of Inertia - A force must be exerted on a body for it to accelerate relative to other bodies - relative to space the body does not accelerate BUT the body's inertial mass does increase - its "space energy level" increases. This is why star formation only takes place in the outlying portion of spiral galaxies. This is where the galaxy's "space energy level" is much higher - therefore it's inertial mass is greater.

Since its inertial mass is greater in this outlying area it's gravitatational power will also (according to Newton) be greater. This greater gravitational power gives matter the strength to compress its matter sufficiently to began a fusion reaction deep within the proto star. There is no need for dark matter to hold the galaxy together nor is there a need for the fictional  "Higgs boson"  to create matter's mass. The energy level of a body of matter relative to space - its "Space Energy Level" determines the body's mass.

Relative Motion: All motion must be relative to something else. To perceive motion of a body it must be compared with another frame of reference or body. When its motion is being compared to absolute space its motion is always zero. That is why Michelson could find no evidence of motion of the Earth through absolute space.

Although an accelerating body's motion is changing relative to other bodies, it is motionless relative to absolute space. It is impossible to move from one part of space to another part, it is all one. BUT the body's energy level relative to space itself ("space energy level") does increase as a force is exerted on it. This is perceived as an increase in the inertial mass of the body. In a particle accelerator a proton becomes more massive as it accelerates. Its energy level relative to space itself (space energy level) increases. It is space itself that creates and determines inertial mass of a body.

When a force is exerted on an accelerating body it always has two changes in its energy level, one relative to other bodies or reference frames (momentum) and one relative to absolute space (inertial mass), the absolute reference frame.

Donald L. Hamilton, author of the book - "The Mind of Mankind" - Human Imagination the source of Mankind's tremendous power.