How on earth can someone balance on just one wheel instead of two? It only took me about 20 minutes to learn, using a handrail and I rode home hands-free. If I can do it, pretty much anyone can.

Nicknamed "Big Wheel," it is in fact one of the largest galaxies ever observed from this early cosmic era. The scientists found Big Wheel near a quasar, which is a powerful and active supermassive ...