Actually, in the space business we use materials that have the right combination of reflecting and emitting at the right wavelengths.
1. "We" as in "You"...?
2. Are you saying "Outer Space" ('space business') as in... a Vacuum?? If so, Begging The Question (Fallacy).
3. What are those Materials '
Specifically' and what are their respective melting points...?
4. What are they reflecting/emitting
INTO...?
5. Wavelengths ??

Have you heard of Quantum Mechanics, by chance??
"Alright So, today we're gonna
shoot down Newtonian Mechanics and
Maxwell's Theory. We're like the Press, we build somebody up only to destroy them".
Ramamurti Shankar; Professor of Physics, Yale.
Quantum Mechanics I: The key experiments and wave-particle duality. (2:00 mark.)
www.youtube.com/watch?v=uK2eFv7ne_Q
Photons are 'Particles'; they are the "Quanta" of
ALL forms of 'Electromagnetic Radiation' --- (Radio Waves, Infrared Rays, Visible Light, Ultraviolet Rays, X Rays, and Gamma Rays). When they "opine" and clumsily stutter..."The Wave-Particle Duality of Light"...ahh, "The Wave" part in that expression isn't a Physical Wave (EM or otherwise)...it's denoted as "The Wave Function".
According to Quantum Mechanics...the most
Experimentally Verified discipline in the History of "Real" Science; Independent of the
KNOWLEDGE of the "
Which-Path Information"... particles (Photons/electrons/atoms/molecules) have no defined properties or location. They exist in a state of a Wave Function which is a series of Potentialities rather than actual objects. That is, "Matter" doesn't exist as a Wave of Energy prior to the Creation of the
Knowledge of the "
Which-Path Information" but as a Wave of Potentialities.
Wave "Functions" aren't "Waves"(Classical Peak/Troughs) they are "Potentialities" i.e., Probabilities, they have no Mass/Energy. That is, you can't measure the Wavelength and Frequency of a Wave Function (LOL). The "Wave" of a Wave Function is not a "Wave" in "Physical Space", it's merely an
abstract mathematical construct.
Can I ask, do you think Photons/electrons/atoms/molecules are riding on "Waves" like Kelly Slater @ the Billabong Tahiti Pro ??
“The WAVE of the wave function, however,
IS NOT A WAVE IN PHYSICAL SPACE; it is a wave in an
ABSTRACT MATHEMATICAL "SPACE", and in this respect it differs fundamentally from water waves or waves on a string.”
[2][3][4][5][6][7][8] --- ( 2. Max Born, 3. Heisenberg, 4. Heisenberg (translated from Niels Bohr), 5. Murdoch, 6. de Broglie…)
https://en.wikipedia.org/wiki/Wave_function
Regarding The Wave Function: "
This wave here is not a physical wave, it does not carry any energy. And it's not even a property of a beam of photons, it's a property of one photon....The Wave is
purely mathematical,
it's a construct we use to determine what will happen in this experiment."
Ramamurti Shankar; Professor of Physics, Yale.
Quantum Mechanics I: The key experiments and wave-particle duality. (20:30 mark.)
www.youtube.com/watch?v=uK2eFv7ne_Q
"Einstein thought that a complete description of physical reality should refer directly to physical space and time, as
DISTINCT from
THE WAVE FUNCTION, which refers to an
ABSTRACT MATHEMATICAL SPACE."
Einstein, A. (1998). P. A. Schlipp, ed. Albert Einstein: Philosopher-Scientist. The Library of Living Philosophers VII (3rd ed.).
"The entire Quantum Mystery is in the Double-Slit Experiment".
Ramamurti Shankar; Professor of Physics, Yale.
Quantum Mechanics II: (Time: 3:10)
www.youtube.com/watch?v=YPHoHv05_Wo ...
So in the typical Young Double-Slit Experiment (No Slit Detectors), whenever a Photon/electron/atom/molecule is fired toward the double-slit, what's in-between the 1. Emitter --- Double Slit?? 2. Double Slit --- Photographic Plate (Detector) ??
1.
Absolutely Nothing Physical ! All 'potentialities' are in Superposition (Wave Function(s)). Here's "The RUB"...
2.
Absolutely Nothing Physical ! It's as if "Equations" are fired then proceed through both slits, Interfering with each other
LIKE --- "Water Waves", then hit the Photographic Plate/Detector as discrete chunks (" Quanta ") of momenta (i.e., Particles).
Just like if you turn on an overhead light to read a book, you only SEE where those Photons
interact with matter "The Book", Photon Source ect. There is ABSOLUTELY NOTHING "Physical" between the Light Bulb and that book.
The 'electromagnetic field' itself
is produced by photons...not the other way around.
And fyi, Quantum Mechanics and materialism/realism/methodological naturalism basically "atheism" are
Direct Contradictions---Married Bachelors!!
regards