The world's biggest plane, with wings longer than a football field, flies with a fueled-up hypersonic vehicle for the first time

• The world's biggest plane has just reached another milestone. 
• Stratolaunch's carrier took a fully-fueled Talon-A hypersonic vehicle on a three-hour-long flight. 
• This a "significant" step towards the company's first hypersonic flight. 

The world's biggest plane broke another milestone after it flew with a fully-fueled hypersonic vehicle prototype for the first time.