Engineers at MIT fly first plane with no moving parts

The video explains a glider weighing 2 kilograms with a 5-meter wingspan that uses ion propulsion. It has two rows of wires under its wings, with the front row carrying positively charged ions and the back row carrying a negative charge. This setup creates ionic wind, generating thrust to propel the glider forward. The glider was tested indoors, achieving a 60-meter flight, marking the first solid-state flight without moving parts, as published in the journal Nature.

What distance did the glider manage to sustain flight?

What is the significance of the flight being described as 'solid-state'?