Huge sphere like 10 meters in diameter with six symmetrical cone like spikes.

I was driving Northbound on highway 2 from Nisku. Approaching 41 avenue, an object flying South from DT Edmonton towards my location attracted my attention. I was close to the airport and thought this is an airplane going to land. I kept following the approaching object and was waiting to see a silhouette of an airplane. Surprisingly I didn’t get it. Instead the object flew on my left side and I had a good chance to see a lot of details. It was a sphere approximately 10 meters in diameter with six symmetrical, identical cone like-spikes. One of the spikes was pointing to the flying direction, another one in the back, one on the top, one on the bottom, one to the left and one to the right. It was a sunny day, the object was shiny silver in colour but not mirror-reflecting. No sound heard, no trace observed. The object was flying at the same height and at a speed a little faster than an airplane landing.