Radio telescopes measure the galaxy’s distribution of . photons from the sun X-rays given off by black holes dust ejected from asteroid impacts on other planets hydrogen from which stars are formed

the correct answer is blue and green.

a visible spectrum is electromagnetic spectrum color that can be seen by a normal human being by a single wavelength of light. the visible light spectrum is the range of wavelengths that make up visible light. the visible light spectrum passes through a prism enabling the rainbow reveals all the colors in the spectrum. these range from red, orange, yellow, green, blue and violet.

seismic wave -

an elastic wave in the earth produced by an earthquake or other means.

explanation:

brave new world, aldous huxley (1932)