Skyfire


 * 1) So skyfire is a comet, right? Because according to Starflight in TBN "I think it's more like a comet than a moon," "I remember a scroll that mentioned something like that in the sky hundreds of years ago. Maybe it circles around and only comes back every thousand years or so. Have you noticed the earthquakes? I think they may be caused by the comet" So skyfire is a comet and it only comes around every 1,000 years. BUT isn't there a comet that comes near earth and is visible every 74-79 years? YES, Halley's comet. SO where does it go? Maybe it goes near Pyrrhia every 1000 years when it is closest to earth and comes back around to earth in time and then goes around a next random planet closest to earth.
 * 2) OR Tui just based that comet off of Halley's comet.