Two spherical objects flew over my house in a straight line from south to north

I was in the driveway next to my house with my infant daughter in a baby-bjorn, waiting for my wife to join us for a walk. It was full daylight, with a clear blue sky and no wind. I looked up an saw a small, metallic, spherical looking object flying in a straight line from south to north. It is hard to say exactly what shape it was but it appeared spherical. I was able to watch it for about a minute, even though there are many tall trees on my street, so it wasn't moving exceedingly fast. It made no sound whatsoever. It had no discernable parts and almost looked like a "blob." I noticed that it was emitting very bright light, almost like a reflection from the sun, but the light would pulsate, shift and move all over it on every side. These pulsating reflections made it difficult to distinguish the actual shape and size of it. The light would intermittently disappear and all I could see was a faint silver sphere, then it would start reflecting and pulsating light again. I called for my wife to come out as fast as she could so she could see it. When she got outside, we ran across the street and she could see it for about 5 seconds before it disappeared behind the trees. I then discussed what it looked like with my wife for about 2-3 minutes until we crossed back to our side of the street and back to where I was standing in the driveway when I first saw it. I looked up to the sky again, and saw another very similar object, and pointed it out to my wife. This second one moved in exactly the same way, at the same speed, and had the same reflecting, pulsating, shifting light however it appeared to both myself and my wife to have an underlying bright red color. it traveled north in a straight line for about a minute or two until it disappeared behind the trees.