Giant orb object, low on the horizon flashing intermittently at exact intervals over approximately 10 miles.A buddy and I were driving home from Madras, south on US highway 97 when I (the passenger) saw a giant, bright gold/yellow colored orb flash very low in the sky/horizon. This light flashed at exact intervals moving north, back toward Madras, about 10 miles away--this all happened in roughly 10 seconds. My friend also saw the light flash a few times when he looked through the rear window of our truck, at its furthest point until it wasn't able to be seen.I have never seen anything like this and have absolutely no explanation what it could have been in this rural area of high desert farmland--I have driven this stretch of highway hundreds of times in early evening, during the night. Again, this light was massive in size, like somebody turned on a giant floodlight, each flash equidistant and at exact intervals. The amount of distance it moved in such a short span of time is unexplainable.