According to our basic understanding of physics and the limits of the natural world, light-speed travel and faster-than-light travel are physical impossibilities, especially for anything with mass, such as spacecraft and humans. But— what if we were made of a finer mass? “There is no such thing as immaterial matter. All spirit is matter, but it is more fine or pure, and can only be discerned by purer eyes.” D&C 131:7
Even if it were possible as normal mass beings to travel at the speed of light, we would only see blackness because the wavelength of the light entering our eyes would be out of the visible spectrum and as the scripture says— could only be discerned by purer eyes.
All electromagnetic radiation is light, but the human eye can see only a small portion of this radiation which we call visible light. In the 1800’s Sir William Herschel, Johann Wilhelm Ritter, James Clerk Maxwell, and Heinrich Hertz helped mankind to realize there is light that our eyes cannot see. The Apostle Paul in his letter to faithful brethren in Colosse in the mid-30s to the mid-50s AD already knew a great deal about light, “For by him were all things created, that are in heaven, and that are in earth, visible and invisible,” Colossians 1:16.
We cannot detect or even comprehend ninety-six percent of the universe we call dark. Perhaps spiritual matter does exist as dark matter.
We can put our imaginations to work and try to put more light on the subject.

Visible light waves are the only electromagnetic spectrum wavelengths that are visible to most human eyes. D&C 58:3, “Ye cannot behold with your natural [human?] eyes, for the present time [earthly experience?], the design of your God concerning those things which shall come hereafter [everlasting life?], and the glory which shall follow after much tribulation [earth experience?].” This revelation was given in August 1831. Sir William Herschel began to recognize visible light and infrared light in 1800, but it was a long time after that astronomers recognized most light cannot be seen by natural eyes.

Visible light waves are the seven colors of the rainbow (and millions of variations) in the visible light spectrum. Red is the longest of the seven wavelengths and the other end is violet, the shortest of the wavelengths. Revelation 1:12, “And I turned to see the voice that spake with me. And being turned, I saw [visible?] seven candlesticks [physical visible light?];”

All the visible wavelengths together make white light from our perception. Revelation 1:14,
“His head and his hairs were white like wool, as white as snow; and his eyes were as a flame of fire [concentration of all wavelengths in the visible spectrum?];”

Black is the absence of light because color is a phenomenon of light.

The colors that we see are the wavelengths that are reflected. Objects give off light that appears to be a color. Color mysteriously exists only in our mind. That is the light we see. What about the light we cannot see as humans?

Revelation 1:20, “The mystery [invisibility?] of the seven stars [EM spectrum, light?] which thou sawest [only John was allowed to see?], in my right hand, and the seven golden candlesticks [visible light?]. The seven stars [EM spectrum from radio waves to gamma rays?] are the angels [spiritual, everlasting power, glory?] of the seven churches [seven degrees or dimensions of light/glory or multiverses?] and the seven candlesticks [seven colors of visible light?] which thou sawest [visible?] are the seven churches [physical visible light in seven orbits or periods of time?].”

We can calculate the universe’s expansion, but we cannot observe any faster-than-light objects in it; they have disappeared from our view. Objects we can see appear different colors because elements absorb the color wavelengths differently.

1 Corinthians 2:14, “But the natural man [brain?] receiveth not the things of the Spirit of God: for they are foolishness unto him [because cannot see?]: neither can he know [learn to see?] them, because thy are spiritually discerned [through the spiritual mind?]. So what would we humans see if we could travel the speed off light?

Nothing–we would only see blackness because the wavelength of the light entering our eyes would be out of our earthly visible spectrum. D&C 122:7-8, ” … if the heavens gather [gravity?] blackness [black holes?], and all the elements combine to hedge up [encircle?] the way [back to everlasting existence?]; … The son of Man hath descended [passed through the white hole?] below [black hole physical, normal mass?] them all [overcome trials and death to return to whiteness of everlasting life?].”

In our visible light existence, black objects absorb all colors so no light is reflected. This might explain dark energy, dark matter, and black holes. Colossians 1:16, “For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him:”

White holes are said to be the opposite of black holes. If we were able to travel as fast or faster than speed of light as spiritual matter past the event horizon of the black holes, perhaps we would see all light without the motion of energy to keep us from being spaghettified.
3 Nephi 19:25, ” … and behold they were as white as the countenance and also the garment of Jesus; and behold the whiteness thereof did exceed all the whiteness, yea even there could be nothing [physical?] upon earth so white as the whiteness thereof [spirit, infrared?].” This might be the area of tachyons where, unlike particles, tachyons travel faster than light as energy or motion decreases. Bradyons are forbidden to break the light speed barrier while tachyons cannot slow down below the speed of light.
D&C 131:7-8, “There is no such thing as immaterial matter. All spirit is matter, but it is more fine or pure [tachyons?], and can only be discerned by purer eyes [eyes that can see the rest of the electromagnetic spectrum?]; We cannot see it; but when our bodies are purified [degrees of glory?] we shall see that it is all matter.”

It all matters and is matter but with different radiation of light. M. Kasey
Marty’s Dark Matter is a melding of psychological drama, murder mystery, and the meaning of life into a gripping story. Order novel by clicking on M. Kasey, author at the top of the page.
M. Kasey