They look fake because they don't really look like that, telescopes that capture imagery of interstellar shit, detect all electromagnetic radiation coming from that part of the sky (like x-rays/UV/visible light), and then colour code all the different electromagnetic spectrums in relation to the wavelength/intensity of the radiation being emitted to form a better picture of the celestial body. They also leave the photographic film exposed to that area of the sky for a long time so more shit hits it, those images are usually a compilation of detected photons over an extended period of exposure, giving the image far more depth and detail than your eye ever could.

Even if the americans did lie, and didn't go to the moon, the russians still got in to space some years before, and witnessed the earths curvature, and subsequently the fact that its not sitting on anything, and doesn't really have a ceiling.