Witnessed red sphere traveling low, silent at very high rate of speed across valley at 2:00 a.m.Upon awakening at 2:15 a.m., I was looking out a window, North facing in my house.I then witnessed what appeared to be a small, bright red sphere flying very low (approx 300-400')in a NW direction. This object was NOT man-made. It traveled silently in an extreme straight attitude and traveled in what I estimate 2-3 miles in about 4 seconds.I live high on a hill. The most remarkable thing about my sighting is speed and attitude of the object. Straight as can be; fast, silent.