NASA-UAP-D010, Mercury Atlas 9 Audio Excerpt, May 15, 1963

And now at one hour at this time, I now have one hour and 21 minutes and I am observing John's fireflies drifting away from me. I can observe them, uh, perturbative parting from the spacecraft and drifting out to the rear. I then can see some of them a considerable distance out to the rear. Sun is coming up behind me. I'm beginning to get the glow on the clouds. Fireflies appear to be white, very whitish, with almost a green like real fireflies. Clouds on the Earth are large, ain't they? The colors are changing color, are getting quite light. I am now on the dayside. The sun is not yet quite up and I am observing stars. The Earth is light below me. The sun is still behind me. The sky looks dark above me and I can see stars very distinctly.