Low rumbling noise then a light. I stood up & saw a white, opaque clear boarder oval or egg shape blob, moving fast from south to nort

West door of barn was open. Picking up hay spilled by cows. I heard a low rumble noise. A bright light caught the top of my eyes. I stood up to see what I thought was the moon for a second. I realized it was moving fast 150 feet from me and from south to north just above the tree line. It was opaque and pale with distinct borders putting out bright light.(no aura). It could have been an oval or egg shaped. My eyes followed it. It passed through low wispy light clouds, then behind something black (a tall tree) then through wispy clouds again and off in the distance. It was almost dark outside. 5:15 guestimate. I saw it do a slight ark and then a dive to the earth or water. It was to my horizon at that time because of the change in the land contour and tall trees running perpendicular to the trees closer to my place. 3-5 minutes passed and I heard another low rumble. For a trajectory, I was facing west. My left hand was pointed straight in front of me. It ended where my right hand was 70 degree. I saw it for 3-5 seconds total. The object was silent, but somehow accompanied by a low rumbling noise like thunder. I was not aware of aircraft chasing it. The only electrical effect was that my computer would not respond. It froze up when I tried to get my report written last night. I believe that when it was close to me and after the first rumbling, there may have been a middle rumbling in the distance, then the third rumbling 3-5 minutes after it dove downward.