Dennett asks how we could see the light change colour before the second light is observed.

Also nowadays the lights are observed occasionally, they have been taken on movies and photographed.

There were those who were skeptical of this report, especially about the part where the Hunleally's lights were "observed and answered."

Light scattering by suspended matter is required in order that the blue light produced by water's absorption can return to the surface and be observed.

As a result complete bright light is observed.

Since then, the activity has decreased and now the lights are observed some 10 - 20 times per year.

At dawn, a strange and mysterious light was observed coming from his room.

He reported that the light could be observed 68 miles away and would cast a strong shadow at a distance of thirteen miles.

This light was observed for a few minutes before being obscured by the fog.

Both lights were observed for thirty to forty-five seconds, and both fell to the ground at roughly the same speed.